From 78cd037bc4d2a60fc919f51ff7c480881245c7d3 Mon Sep 17 00:00:00 2001 From: babayaga Date: Wed, 12 Mar 2025 13:51:30 +0100 Subject: [PATCH] os kiln :) --- projects/oven/kpot/config.json | 52 ++++++ projects/oven/kpot/config.yaml | 73 +++++++++ projects/oven/kpot/readme.md | 11 ++ projects/oven/kpot/resources/guide.md | 152 ++++++++++++++++++ projects/oven/kpot/resources/heating.md | 143 ++++++++++++++++ projects/oven/kpot/specs.xlsx | Bin 0 -> 6601 bytes projects/oven/kpot/templates/shared/body.md | 9 ++ .../oven/kpot/templates/shared/mini_specs.md | 68 ++++++++ .../kpot/templates/shared/product_features.md | 0 .../oven/kpot/templates/shared/resources.md | 0 10 files changed, 508 insertions(+) create mode 100644 projects/oven/kpot/config.json create mode 100644 projects/oven/kpot/config.yaml create mode 100644 projects/oven/kpot/readme.md create mode 100644 projects/oven/kpot/resources/guide.md create mode 100644 projects/oven/kpot/resources/heating.md create mode 100644 projects/oven/kpot/specs.xlsx create mode 100644 projects/oven/kpot/templates/shared/body.md create mode 100644 projects/oven/kpot/templates/shared/mini_specs.md create mode 100644 projects/oven/kpot/templates/shared/product_features.md create mode 100644 projects/oven/kpot/templates/shared/resources.md diff --git a/projects/oven/kpot/config.json b/projects/oven/kpot/config.json new file mode 100644 index 000000000..9c44e1911 --- /dev/null +++ b/projects/oven/kpot/config.json @@ -0,0 +1,52 @@ +{ + "slug": "elena-zmax", + "name": "Injector Elena", + "category": "injection", + "code": "ELZ", + "parts": "parts.csv", + "opensource": true, + "bestseller": true, + "Preview3d": true, + "version": "RC2", + "status": "mature", + "cscartId": 71, + "shipping_eu": "130 Euro", + "shipping_oversee": "900 Euro", + "showParts": false, + "showDimensions": false, + "hasSpec": true, + "forumCategory": 50, + "_gallery":{ + "gallery": { + "glob": ["latest.jpg"] + }, + "renderings": { + "glob": ["Base.jpg"] + } + }, + "firmware":"https://git.polymech.io/osr-plastic/osr-firmware/src/branch/master/elz-motor-rc1", + "authors": [ + { + "name": "PlasticHub S.L.", + "url": "${author_link}" + } + ], + "components": [ + { + "name": "Injection Valve", + "forum_url": "https://forum.osr-plastic.org/t/injection-valve/10100", + "path": "../components/304_Valve-40mm", + "store": "https://shop.osr-plastic.org/injection/injection-parts/injection-valve" + }, + { + "name": "Transmission", + "forum_url": "https://forum.osr-plastic.org/t/injection-valve/10100", + "path": "./cad/components/injector/600_Transmission.SLDASM", + "store": "https://shop.osr-plastic.org/injection/injection-parts/arbor-drive-kit/" + }, + { + "name": "Clamp", + "path": "../components/200_Clamps/OSR-300-40-30-25-80/Global-GH-35000HL.SLDASM" + } + ] +} \ No newline at end of file diff --git a/projects/oven/kpot/config.yaml b/projects/oven/kpot/config.yaml new file mode 100644 index 000000000..b1f685dc7 --- /dev/null +++ b/projects/oven/kpot/config.yaml @@ -0,0 +1,73 @@ +tags : + - v3 + - injection +categories: + - Injection + - Machines +alternatives: + - injector +projects: + - PiranhaClamp +tabs: + - build: false +product_id: elena-zmax +preview: ${product_preview} +buy: "mailto:sales@plastic-hub.com?subject=Inquiry%20-%20${slug}" +teaser: "Our all time classic injection , perfect for starters and experiments." +products: true +overview_drawing: true +products_row: + - image_path: /assets/site/product_sunglass.png + alt: "Injection Press" + title: "Injection Press" + excerpt: "Powerful and precise injection" + url: "https://bazar.preciousplastic.com/products/presale-square-model-clone/" + btn_class: "btn--primary horizontal-margin" + btn_label: "Learn more" + buy: "test" + price: "From 2000 Euro" + - image_path: /assets/site/product_haircomb.jpeg + price: "From 2000 Euro" + alt: "fully responsive" + title: "Extrusion" + buy: "test" + excerpt: "Semi profession extruder" + url: "https://bazar.preciousplastic.com/moulds/injection-moulds/hair-comb/" + btn_class: "btn--primary horizontal-margin" + btn_label: "Learn more" + - image_path: /assets/site/products_knives.jpg + price: "From 2000 Euro" + buy: "test" + alt: "100% free" + title: "Extrusion & Shredder" + excerpt: "Howtos" + url: "https://www.clementknives.com" + btn_class: "btn--primary horizontal-margin" + btn_label: "Learn more" + - image_path: /assets/site/product_plug.jpg + price: "From 2000 Euro" + buy: "test" + alt: "100% free" + title: "Extrusion & Shredder" + excerpt: "Howtos" + url: "https://osr-plastic.org/howtos/make-a-lightswitch-and-socket.html" + btn_class: "btn--primary horizontal-margin" + btn_label: "Learn more" + - image_path: /assets/site/product_carabiner.jpg + price: "From 2000 Euro" + buy: "test" + alt: "100% free" + title: "Extrusion & Shredder" + excerpt: "Howtos" + url: "https://osr-plastic.org/howtos/make-a-carabiner-cnc-vs-lasercut.html" + btn_class: "btn--primary horizontal-margin" + btn_label: "Learn more" + - image_path: /assets/site/product_piranha.png + price: "From 2000 Euro" + buy: "test" + alt: "100% free" + title: "Extrusion & Shredder" + excerpt: "Howtos" + url: "https://osr-plastic.org/howtos/make-a-carabiner-cnc-vs-lasercut.html" + btn_class: "btn--primary horizontal-margin" + btn_label: "Learn more" diff --git a/projects/oven/kpot/readme.md b/projects/oven/kpot/readme.md new file mode 100644 index 000000000..16626dc2c --- /dev/null +++ b/projects/oven/kpot/readme.md @@ -0,0 +1,11 @@ + +## Firmware + +- https://github.com/ZachJMoore/smart-kiln-hardware +- https://github.com/jbruce12000/kiln-controller + +## References + +- [Forum - Ceramics](https://community.ceramicartsdaily.org/) +- [Paragon - USA](https://paragonweb.com/) + diff --git a/projects/oven/kpot/resources/guide.md b/projects/oven/kpot/resources/guide.md new file mode 100644 index 000000000..b0209769b --- /dev/null +++ b/projects/oven/kpot/resources/guide.md @@ -0,0 +1,152 @@ +# **Constructing a High-Temperature Kiln: A Comprehensive Guide** + +Kilns are essential tools for a wide range of applications, from the ancient craft of pottery and glassmaking to modern metallurgy and materials science1. This comprehensive guide provides a detailed overview of constructing a high-temperature kiln capable of reaching 2500°C. We will explore the necessary materials, the step-by-step construction process, and crucial safety precautions. + +## **A Brief History of Kilns** + +The history of kilns can be traced back to ancient civilizations, where they were primarily used for firing pottery and producing essential materials like bricks and tiles. Early kilns were simple structures, often pit-fired or built from clay and stone. Around 2700-2500 B.C., kilns were developed for glass production, marking a significant advancement in technology2. Over time, kiln designs evolved to improve efficiency, temperature control, and the quality of fired materials. The development of continuous kilns in the 19th century revolutionized industrial processes, enabling mass production of ceramics, cement, and other materials. Today, kilns play a vital role in various industries, including ceramics, glass, metallurgy, and materials science. + +## **Types of Kilns** + +Kilns come in various designs, each with its own advantages and limitations. When aiming for temperatures up to 2500°C, certain types stand out: + +* **Gas Kilns:** Fueled by natural gas or propane, these kilns offer precise temperature control and are well-suited for high-temperature applications3. They provide greater flexibility in achieving and maintaining high temperatures compared to electric kilns. +* **Electric Kilns:** Electric kilns are favored for their ease of use and consistent heating, especially for lower temperature ranges. However, reaching temperatures above 2000°F (approximately 1093°C) with electric kilns can be challenging and may require specialized elements with higher temperature resistance and robust electrical systems capable of handling the increased power demands4. +* **Anagama Kilns:** These ancient kilns, originating in China and later adopted in Japan, are single-chamber structures built on a slope5. Wood-fired, they create a unique environment for firing pottery, with ash and flame interacting directly with the ware. While capable of reaching high temperatures, Anagama kilns require skilled operation and careful temperature management. +* **Noborigama Kilns:** Also known as climbing kilns, Noborigama kilns are multi-chambered structures built on a slope, with each chamber positioned higher than the previous one5. This design allows for efficient use of heat as it rises through the chambers. Noborigama kilns are typically wood-fired and can achieve high temperatures suitable for stoneware and porcelain. +* **Specialized High-Temperature Kilns:** For extreme temperatures exceeding 2500°C, specialized industrial kilns or those used in research laboratories are necessary. These kilns often employ advanced materials and heating technologies. Examples include: + * **Continuous Kilns:** These kilns, also known as tunnel kilns, have a continuous heat source in the center. Ware is moved through the kiln on a conveyor belt, passing through different temperature zones3. This design allows for continuous production and efficient use of energy. + * **Intermittent Kilns:** These kilns are heated periodically for specific firing cycles3. They are often used for smaller-scale production or specialized applications. + * **Shaft Kilns:** Similar in design to a blast furnace, shaft kilns are used for continuous production of materials like cement6. Raw materials and fuel are continuously added at the top, while the finished product is withdrawn from the bottom. + +## **Materials for Kiln Construction** + +Constructing a kiln that can withstand 2500°C requires careful selection of materials with high heat resistance and the ability to withstand thermal shock. Here's a breakdown of essential materials: + +* **Refractory Bricks:** These bricks form the core structure of the kiln and provide insulation. There are two main types: + * **Insulating Fire Bricks (IFB):** IFB contains a high volume of air, making it an excellent insulator. However, this porosity also makes it more susceptible to damage from crushing, cracking, or gouging7. + * **Hard Fire Bricks:** These dense bricks are more durable than IFB but absorb more heat and offer less insulation7. Choosing between IFB and hard brick depends on the specific needs of the kiln and the desired balance between insulation and durability. +* **High-Temperature Insulation:** + * **Ceramic Fiber:** Ceramic fiber blankets and boards offer excellent insulation and can be used in conjunction with refractory bricks7. Different types of ceramic fiber, such as Kaowool (rated to 1260°C) and Cerachem (rated to 1426°C), provide varying levels of heat resistance8. + * **Microporous Insulation:** Materials like Min-K and WDS offer exceptional insulating properties due to their microporous structure8. They are often used in high-temperature applications where minimizing heat loss is critical. +* **Refractory Mortar:** This specialized mortar is crucial for binding refractory bricks and withstanding high temperatures7. It must be carefully dried before firing to prevent steam explosions that can damage the kiln structure. +* **Refractory Concrete:** Castable refractories, also known as refractory concrete, are high-temperature cements used for forming complex shapes or repairing kiln linings7. Like mortar, castable refractories require careful curing and drying before exposure to high temperatures. +* **Kiln Furniture:** Kiln shelves, posts, and other supports made from refractory materials are necessary to hold the objects being fired. These materials must be chosen based on their heat resistance and compatibility with the materials being fired. +* **Heating Elements (for electric kilns):** + * **Kanthal Wire:** Kanthal wire, a type of NiCr wire, is commonly used for heating elements in electric kilns9. Different grades of Kanthal wire offer varying temperature resistance. For temperatures above 2450°F (1343°C), other element types or specialized alloys may be required4. +* **Metal Casing:** A sturdy metal frame or casing encloses the kiln and provides structural support9. The choice of metal depends on the kiln's size and the maximum operating temperature. + +## **Manufacturing Steps** + +Building a high-temperature kiln involves several key steps: + +1. **Design and Planning:** Determine the kiln's size, shape, and type (electric or gas) based on your specific needs and the materials you will be firing. Consider factors such as the required temperature range, the size and quantity of objects to be fired, and the available space for installation. +2. **Foundation and Base:** Construct a stable and level foundation using fireproof materials like concrete or brick. This foundation is crucial for supporting the weight of the kiln and ensuring its stability during high-temperature operation. +3. **Kiln Walls:** Lay the refractory bricks using refractory mortar to form the kiln walls. Ensure proper insulation by incorporating ceramic fiber blankets or boards between the brick layers. The thickness of the insulation will depend on the desired temperature and the type of refractory bricks used. +4. **Heating System:** + * **Electric Kilns:** Install the heating elements in grooves cut into the refractory bricks. Secure the elements with pins and connect them to a suitable power source and controller9. Ensure that the electrical wiring and connections are properly rated for the high temperatures and amperage involved. + * **Gas Kilns:** Install gas burners and ensure proper ventilation for exhaust gases. The placement and configuration of burners are crucial for achieving uniform temperature distribution within the kiln. +5. **Kiln Door:** Construct a door using refractory materials and a metal frame. Include insulation to minimize heat loss9. The door should fit snugly to prevent heat leakage and ensure efficient operation. +6. **Control System:** Install a reliable temperature controller and thermocouple system to monitor and regulate the kiln's temperature. Thermocouples should be inserted an inch or two into the interior of the kiln and should have at least 1" clearance from any shelves, components, or materials placed inside10. This placement ensures accurate temperature measurement and prevents damage to the thermocouple. +7. **Curing and Drying:** Allow the kiln to cure and dry completely before the first firing to prevent cracking or damage. This is especially important for refractory mortar and concrete, which can be susceptible to steam explosions if not properly dried7. + +## **Kiln Controllers** + +Kiln controllers are essential for regulating the temperature and firing cycle of a kiln. They range from simple manual controllers to sophisticated digital systems with programmable features. + +* **Manual Controllers:** These basic controllers allow for manual adjustment of the heating elements or gas flow to control the temperature. They are typically less expensive but require more attention and manual intervention during firing. +* **Programmable Controllers:** Programmable controllers allow users to set specific firing schedules with ramp rates, hold times, and cooling rates. This automation simplifies the firing process and improves consistency. +* **Digital Controllers:** Digital controllers offer advanced features such as multiple programs, data logging, and remote monitoring capabilities. They provide greater precision and control over the firing process. + +Choosing the appropriate kiln controller depends on the complexity of your firing needs and your budget. + +## **Safety Precautions** + +Working with high-temperature kilns requires strict adherence to safety precautions: + +* **Ventilation:** Adequate ventilation is crucial for removing harmful fumes and gases produced during firing, such as carbon monoxide, sulfur oxides, and metal vapors10. Proper ventilation also ensures efficient combustion and helps maintain uniform temperature distribution within the kiln11. +* **Protective Gear:** Always wear appropriate safety gear, including heat-resistant gloves, eye protection with infrared filters, and a respirator when handling hot materials or working with potentially hazardous substances12. +* **Clearance:** Maintain a safe distance between the kiln and combustible materials13. The kiln should be placed on a non-combustible surface, such as concrete or tile, and should have adequate clearance from walls and ceilings. +* **Electrical Safety:** For electric kilns, ensure proper grounding and use a dedicated circuit with a properly rated power outlet14. Avoid using extension cords, as they can overheat and pose a fire hazard. +* **Fire Safety:** Keep a fire extinguisher nearby and be aware of potential fire hazards10. Never leave the kiln unattended during firing, and ensure that the surrounding area is free of flammable materials. +* **Handling:** Use caution when loading and unloading the kiln, and allow the kiln and materials to cool completely before handling14. Hot kiln furniture and fired ware can cause severe burns. + +## **Applications of High-Temperature Kilns** + +High-temperature kilns are used in a wide range of industries and applications, including: + +* **Ceramics:** Firing pottery, stoneware, porcelain, and other ceramic materials. +* **Glass:** Melting and fusing glass, creating glass art, and producing glass components. +* **Metallurgy:** Melting and refining metals, heat treating metal parts, and producing alloys1. +* **Materials Science:** Sintering ceramics, creating advanced materials, and conducting high-temperature experiments. + +The specific design and features of a kiln will vary depending on its intended application. + +## **Achieving Temperature Uniformity** + +Maintaining a uniform temperature distribution within the kiln is crucial for achieving consistent results. Several factors influence temperature uniformity: + +* **Kiln Design:** The shape and size of the kiln, as well as the placement of heating elements or burners, affect how heat is distributed within the chamber. +* **Insulation:** Proper insulation ensures that heat is retained within the kiln and minimizes temperature variations. +* **Burner Placement:** In gas kilns, the placement and configuration of burners play a critical role in achieving uniform heating. +* **Airflow:** Proper airflow within the kiln is essential for even heat distribution. + +Careful design and operation are necessary to minimize temperature gradients and ensure consistent firing results. + +## **Pyrometric Cone Equivalent (PCE)** + +Pyrometric Cone Equivalent (PCE) is a measure of the heat resistance of refractory materials1. It indicates the temperature at which a standardized cone of the material will bend and deform under specific conditions. PCE is an important factor to consider when selecting refractory bricks and other materials for kiln construction. + +## **Key Considerations** + +Building a high-temperature kiln requires careful consideration of several key factors: + +* **Kiln Type:** Choose the appropriate kiln type (gas, electric, or specialized) based on your temperature requirements, application, and budget. +* **Materials:** Select high-quality refractory materials with appropriate heat resistance and durability. Consider the trade-offs between insulating fire bricks and hard fire bricks. +* **Construction:** Follow proper construction techniques to ensure a stable and well-insulated kiln. Pay attention to details such as bricklaying, mortar application, and element installation. +* **Safety:** Prioritize safety by incorporating adequate ventilation, using protective gear, and following safe operating procedures. + +## **Conclusion** + +Constructing a high-temperature kiln is a challenging but rewarding endeavor. By carefully planning, selecting appropriate materials, and following proper construction and safety guidelines, you can create a functional and safe kiln for your specific needs. This guide has provided a comprehensive overview of the key considerations involved in building a high-temperature kiln. Remember to prioritize safety and consult with experienced kiln builders or professionals if you have any questions or require assistance. + +For more information, you can explore these resources: + +* **Instructables:** Homemade Electric Kiln 9 +* **Ancient Pottery:** How to Make a Pottery Kiln at Home 15 +* **Kiln Frog:** Buying a Kiln 4 +* **Kiln Control:** Kiln Safety at Home Kilns 10 +* **Skutt:** Kiln Safety 16 +* **Soul Ceramics:** Kiln Safety Tips 12 +* **Texas Department of Insurance:** Safe Practices for Electric Kilns 14 +* **Kilns Australia:** Kiln FAQ 13 +* **Ceramic Arts Daily:** Kiln Build from Scratch 17 +* **Reddit:** Building a Kiln 18 +* **Reddit:** High Temperature Heat Shield 19 +* **Morgan Advanced Materials:** Thermal Ceramics Solutions 8 +* **Steuler Linings:** High-Temperature Kiln Construction 20 +* **Ceramic Arts Network:** Refractories 7 +* **PDH Online:** Refractory Materials 1 + +#### **Works cited** + +1\. Overview of Refractory Materials \- PDH Online, accessed on March 12, 2025, [https://www.pdhonline.com/courses/m158/m158content.pdf](https://www.pdhonline.com/courses/m158/m158content.pdf) +2\. A Brief History of ancient Greek Ceramic Kilns | The Post Hole, accessed on March 12, 2025, [https://www.theposthole.org/read/article/459](https://www.theposthole.org/read/article/459) +3\. Types of Kilns: An Informative Guide for Kiln Users \- SDS Industries, accessed on March 12, 2025, [https://www.kilncontrol.com/blog/types-of-kilns/](https://www.kilncontrol.com/blog/types-of-kilns/) +4\. The Ultimate Guide to Buying the Right Pottery Kiln for You, accessed on March 12, 2025, [https://kilnfrog.com/blogs/frogblog/buying-a-kiln](https://kilnfrog.com/blogs/frogblog/buying-a-kiln) +5\. Anagama kiln \- Wikipedia, accessed on March 12, 2025, [https://en.wikipedia.org/wiki/Anagama\_kiln](https://en.wikipedia.org/wiki/Anagama_kiln) +6\. Cement kiln \- Wikipedia, accessed on March 12, 2025, [https://en.wikipedia.org/wiki/Cement\_kiln](https://en.wikipedia.org/wiki/Cement_kiln) +7\. Refractories \- Ceramic Arts Network, accessed on March 12, 2025, [https://ceramicartsnetwork.org/ceramic-recipes/recipe/Refractories](https://ceramicartsnetwork.org/ceramic-recipes/recipe/Refractories) +8\. Thermal Ceramics Solutions \- Morgan Advanced Materials, accessed on March 12, 2025, [https://www.morganadvancedmaterials.com/media/v1dltxvx/thermal-ceramics-solutions-fibre-refractory-microporous-insulation-brochure.pdf](https://www.morganadvancedmaterials.com/media/v1dltxvx/thermal-ceramics-solutions-fibre-refractory-microporous-insulation-brochure.pdf) +9\. Homemade Electric Kiln : 6 Steps (with Pictures) \- Instructables, accessed on March 12, 2025, [https://www.instructables.com/Homemade-Electric-Kiln/](https://www.instructables.com/Homemade-Electric-Kiln/) +10\. Complete Guide to Kiln Safety for Your At Home Kiln \- SDS Industries, accessed on March 12, 2025, [https://www.kilncontrol.com/blog/kiln-safety-at-home-kilns/](https://www.kilncontrol.com/blog/kiln-safety-at-home-kilns/) +11\. Cautions | Hot Kilns, accessed on March 12, 2025, [https://hotkilns.com/support/cautions](https://hotkilns.com/support/cautions) +12\. Kiln Safety Tips | How to Fire Safely and Effectively \- Soul Ceramics, accessed on March 12, 2025, [https://www.soulceramics.com/pages/kiln-safety-tips](https://www.soulceramics.com/pages/kiln-safety-tips) +13\. Kiln FAQ \- Woodrow Kilns, accessed on March 12, 2025, [https://kilns.com.au/support/kiln-faq](https://kilns.com.au/support/kiln-faq) +14\. www.tdi.texas.gov, accessed on March 12, 2025, [https://www.tdi.texas.gov/pubs/videoresource/stpelectrickiln.pdf](https://www.tdi.texas.gov/pubs/videoresource/stpelectrickiln.pdf) +15\. Make a Primitive Kiln at Home \- Easy to Follow Instructions with Photos, accessed on March 12, 2025, [https://ancientpottery.how/how-to-make-a-pottery-kiln-at-home/](https://ancientpottery.how/how-to-make-a-pottery-kiln-at-home/) +16\. Kiln Safety \- Kilns | Ceramic Pottery Kiln, Glass Kiln, Pottery Wheels | Skutt, accessed on March 12, 2025, [https://skutt.com/skutt-resources/resources-just-for-you/architectural-specifications/kiln-safety/](https://skutt.com/skutt-resources/resources-just-for-you/architectural-specifications/kiln-safety/) +17\. Kiln build from scratch \- Equipment Use and Repair \- Ceramic Arts Daily Forums, accessed on March 12, 2025, [https://community.ceramicartsdaily.org/topic/22034-kiln-build-from-scratch/](https://community.ceramicartsdaily.org/topic/22034-kiln-build-from-scratch/) +18\. Building a Kiln : r/PrimitiveTechnology \- Reddit, accessed on March 12, 2025, [https://www.reddit.com/r/PrimitiveTechnology/comments/jswrb8/building\_a\_kiln/](https://www.reddit.com/r/PrimitiveTechnology/comments/jswrb8/building_a_kiln/) +19\. High temperature heat sheild : r/materials \- Reddit, accessed on March 12, 2025, [https://www.reddit.com/r/materials/comments/1bm82ib/high\_temperature\_heat\_sheild/](https://www.reddit.com/r/materials/comments/1bm82ib/high_temperature_heat_sheild/) +20\. high-temperature kiln construction design and materials up to 1800 °c \- Steuler Linings, accessed on March 12, 2025, [https://linings.steuler.de/fileadmin/shared/documents/brochures/Refractory\_Linings/englisch/high-temperature-kiln-construction-design-and-materials-en.pdf](https://linings.steuler.de/fileadmin/shared/documents/brochures/Refractory_Linings/englisch/high-temperature-kiln-construction-design-and-materials-en.pdf) \ No newline at end of file diff --git a/projects/oven/kpot/resources/heating.md b/projects/oven/kpot/resources/heating.md new file mode 100644 index 000000000..ddf610004 --- /dev/null +++ b/projects/oven/kpot/resources/heating.md @@ -0,0 +1,143 @@ +# **Kiln Firing: A Comprehensive Overview** + +Kilns are thermally insulated chambers that produce temperatures high enough to cause changes in materials placed inside. For millennia, kilns have been essential tools for ceramic artists, transforming clay into durable pottery, tiles, and bricks. Today, kilns are used to fire a wide range of ceramic materials, creating functional and decorative objects. This article provides a comprehensive overview of kiln firing, including information on different types of kilns, temperature calculation, cone tables, firing times, controllers, and other essential aspects of the process. + +## **History of Kilns** + +The earliest kilns were rudimentary structures, simple pits dug into the ground and filled with combustible materials1. These early kilns, dating back to around 6000 BCE, were able to produce temperatures greater than 900 °C (1652 °F)1. Over time, kiln technology evolved, with the development of more sophisticated designs such as the updraft kiln, which featured a separate combustion chamber and firing chamber2. + +With the industrial age, kilns were designed to use electricity and more refined fuels, including natural gas and propane1. Modern kilns offer precise temperature control and a variety of features to achieve specific firing effects3. + +## **Types of Kilns** + +Kilns come in various forms, each with its own unique features and applications. Some of the most common types of kilns used in ceramics include: + +* **Electric Kilns:** These are the most popular type of kilns for artists and hobbyists, offering precise temperature control and ease of use. Electric kilns use electric heating elements made from Kanthal wire to heat the firing chamber1. They typically have digital controllers that allow for precise programming of firing schedules. Electric kilns are known for their energy efficiency, as heat given off during cooling can be recycled to pre-heat incoming ware1. +* **Gas Kilns:** Gas kilns use natural gas or propane as a fuel source and can reach higher temperatures than electric kilns5. They are often favored by artists who desire the unique effects that can be achieved with gas firing, such as reduction firing, which can create a variety of colors and textures in glazes3. +* **Wood-Fired Kilns:** Wood-fired kilns are the oldest type of kiln and are still used by some artists today. They offer a unique firing experience and can produce beautiful and unpredictable results, prized for their unique aesthetic qualities3. Wood firing requires a significant amount of skill and experience, as the temperature and atmosphere within the kiln can be difficult to control. +* **Raku Kilns:** Raku kilns are designed for a specific type of firing called raku firing, in which pottery is removed from the kiln while it is still hot and placed in a container with combustible materials to create unique surface effects. Raku kilns come in various sizes, from small, portable units to larger, more permanent structures3. +* **Microwave Kilns:** These small kilns are designed to be placed inside a standard microwave oven1. They are limited in size and the heating process is less controlled than in other types of kilns, but they offer a unique and accessible option for firing small ceramic pieces. +* **Industrial Kilns:** Industrial kilns are used for large-scale ceramics production1. Some examples include: + * **Hoffmann kiln:** A continuous kiln that is energy-efficient due to the recycling of heat during cooling1. + * **Roller kiln:** A continuous kiln where wares are carried through the firing chamber on rollers1. +* **Chamber Kilns:** Chamber kilns are enclosed kilns that come in top-loading and front-loading configurations6. They offer a controlled environment for firing ceramics and are available in various sizes to accommodate different needs. +* **Top-Hat Kilns:** These kilns have a distinctive box-shaped cover that is lowered onto the wares during firing6. They can be fired using various energy sources, including gas and electricity. + +## **Kiln Components** + +In addition to the firing chamber, kilns have several essential components that contribute to their function and performance. These include: + +* **Heating Elements:** Electric kilns use heating elements made from Kanthal wire, while glass kilns often use elements made from molybdenum wire4. The heating elements are responsible for generating the heat within the kiln. +* **Kiln Shelves and Posts:** Kiln shelves and posts are used to support and separate pottery during firing7. They are typically made from refractory materials that can withstand high temperatures. +* **Saggars:** Saggars are containers used to protect pottery or create specific firing effects within the kiln1. They can be made from various materials, including clay and ceramic fiber. + +## **Kiln Room Ventilation** + +Proper ventilation is crucial for maintaining a safe and efficient firing environment. Kilns generate significant heat and can release fumes and gases during firing. Adequate ventilation helps to remove these byproducts and prevent the buildup of heat in the kiln room8. + +Calculating ventilation requirements involves considering factors such as the BTU output of the kiln, the desired room temperature, and the typical outside temperature8. + +## **Temperature Calculation** + +Accurate temperature control is crucial for successful kiln firing. While modern kilns offer precise temperature readings through digital controllers and pyrometers, understanding the principles of temperature calculation remains essential. + +### **Heatwork** + +Heatwork is a fundamental concept in kiln firing, referring to the combined effect of time and temperature on the ceramic materials being fired9. It's not just about reaching a specific temperature; the duration of the firing and the rate at which the temperature changes also play a crucial role in the final outcome. + +### **Pyrometric Cones and Cone Tables** + +One of the most important tools for temperature calculation is the pyrometric cone system. Pyrometric cones are small, pyramid-shaped pieces made from ceramic materials designed to melt at specific temperatures10. By placing cones with known melting points in the kiln, potters can monitor the heatwork and determine when the kiln has reached the desired temperature. + +Cone tables provide a reference for the melting points of different cones. The Orton cone chart is the most widely used standard in the ceramics industry12. The cone number indicates the temperature at which the cone will bend when heated at a specific rate. For example, a large Cone 06 bends at 1830°F (1000°C) when heated at a rate of 108°F (60°C) per hour11. It's important to note that other cone sizes have different temperature equivalents. + +It's crucial to understand that cones measure heatwork, not just temperature10. The heating rate affects the cone's bending temperature. Faster heating rates require higher temperatures to bend the cone, while slower rates require lower temperatures11. Factors such as reducing atmospheres and the presence of sulfur oxides can also affect cone bending11. + +## **Firing Times** + +Firing times vary depending on several factors, including the type of kiln, the size of the kiln, the type of clay being fired, the desired firing temperature, and the ramp rate (the speed at which the kiln temperature increases)13. + +Here's a general overview of firing times for different types of clay, kiln sizes, and ramp rates: + +| Clay Type | Kiln Size | Ramp Rate (°F/hour) | Firing Time (hours) | +| :---- | :---- | :---- | :---- | +| Earthenware | Small | 150 | 8-12 | +| Earthenware | Medium | 150 | 10-18 | +| Earthenware | Large | 150 | 14-24 | +| Stoneware | Small | 200 | 10-14 | +| Stoneware | Medium | 200 | 12-20 | +| Stoneware | Large | 200 | 18-26 | +| Porcelain | Small | 250 | 12-16 | +| Porcelain | Medium | 250 | 16-24 | +| Porcelain | Large | 250 | 20-28 | + +These are just estimates, and actual firing times may vary. It's always best to consult the manufacturer's recommendations for the specific clay and kiln being used. + +## **Kiln Firing Schedules** + +A kiln firing schedule outlines the specific steps involved in a firing, including ramp rates, target temperatures, and hold times14. There are different types of firing schedules, including: + +* **Ramp-Hold Firing Mode:** This mode allows for precise control over the firing process by dividing it into segments with specific ramp rates, target temperatures, and hold times14. +* **Cone-Fire Firing Mode:** This mode uses pre-programmed schedules based on the Orton pyrometric cone system14. The last segment is typically programmed at a rate of 108°F (60°C) temperature rise per hour. + +## **Kiln Controllers** + +Kiln controllers are electronic devices that regulate the temperature and firing schedule of a kiln. They have revolutionized kiln firing, allowing for greater precision and control over the process. + +### **Types of Kiln Controllers** + +There are various types of kiln controllers, each with its own features and benefits: + +* **Manual Controllers:** Manual controllers have a simple on/off switch and a dial to adjust the firing time15. They are easy to use but require constant monitoring and adjustment by the user. +* **Digital Controllers:** Digital controllers are more sophisticated and offer a wide range of features, including programmable firing schedules, multiple segments with different ramp rates and hold times, and delay start options15. They allow for greater precision and consistency in firing and can be used for complex firing processes such as annealing. + * **3-Key Controllers:** These controllers have a simplified interface with three keys for basic programming16. + * **12-Key Controllers:** These controllers offer more programming options with additional keys for greater convenience16. + * **Touchscreen Controllers:** Touchscreen controllers provide an intuitive interface for easy navigation and programming16. + +### **Key Features to Consider** + +When choosing a kiln controller, consider the following features: + +* **Programming Options:** Look for a controller that offers the flexibility to create custom firing schedules or use pre-programmed schedules. +* **Temperature Control Accuracy:** Choose a controller with a reliable thermocouple and accurate temperature readings. +* **Diagnostic Tools:** Some controllers offer diagnostic tools to help monitor kiln performance and identify potential issues. +* **Remote Kiln Controls:** Some controllers offer remote monitoring and control through mobile apps, allowing for greater convenience and flexibility17. + +### **Kiln Monitors** + +Kiln monitors are independent devices that track firing data using their own thermocouple18. They can be used to monitor kiln performance, identify temperature variations, and improve consistency in firing. + +### **Thermocouple Offset** + +Thermocouples, the temperature sensors used in kilns, can be affected by age, electromagnetic interference, and oxidation14. This can lead to inaccurate temperature readings. Thermocouple offset is a feature that allows you to compensate for these factors by adjusting the temperature reading displayed by the controller. + +### **Popular Brands** + +Some popular brands of kiln controllers include Bartlett, Skutt, and Orton20. + +## **Conclusion** + +Kiln firing is a multifaceted process that requires knowledge and understanding of various factors, including kiln types, temperature calculation, firing times, and controllers. By carefully considering these aspects and following best practices, ceramic artists can achieve successful and predictable results in their firings. This article has provided a comprehensive overview of kiln firing, covering essential aspects such as kiln history, types of kilns, temperature calculation, firing times, and kiln controllers. For those seeking to delve deeper into specific areas, the references and links provided throughout the article offer valuable resources for further exploration. + +#### **Works cited** + +1\. Kiln \- Wikipedia, accessed on March 12, 2025, [https://en.wikipedia.org/wiki/Kiln](https://en.wikipedia.org/wiki/Kiln) +2\. Ancient Greek Ceramic Kilns | Department of Classics \- University of Colorado Boulder, accessed on March 12, 2025, [https://www.colorado.edu/classics/2018/06/14/ancient-greek-ceramic-kilns](https://www.colorado.edu/classics/2018/06/14/ancient-greek-ceramic-kilns) +3\. Types of Kilns: An Informative Guide for Kiln Users \- SDS Industries, accessed on March 12, 2025, [https://www.kilncontrol.com/blog/types-of-kilns/](https://www.kilncontrol.com/blog/types-of-kilns/) +4\. Ceramics & Pottery Kilns for Sale, accessed on March 12, 2025, [https://kilnfrog.com/collections/ceramics-pottery](https://kilnfrog.com/collections/ceramics-pottery) +5\. Kiln Safety Training Program \- Texas Department of Insurance, accessed on March 12, 2025, [https://www.tdi.texas.gov/pubs/videoresource/stpelectrickiln.pdf](https://www.tdi.texas.gov/pubs/videoresource/stpelectrickiln.pdf) +6\. 12 Types of Kilns for Pottery | Fire Clay Different Ways, accessed on March 12, 2025, [https://kilnfrog.com/pages/kiln-types](https://kilnfrog.com/pages/kiln-types) +7\. The Basics \- Kilns | Ceramic Pottery Kiln, Glass Kiln, Pottery Wheels | Skutt, accessed on March 12, 2025, [https://skutt.com/skutt-resources/resources-just-for-you/teacher/the-basics/](https://skutt.com/skutt-resources/resources-just-for-you/teacher/the-basics/) +8\. Calculating ventilation requirements for heat from a kiln room | Hot Kilns, accessed on March 12, 2025, [https://hotkilns.com/support/pottery-kiln-knowledgebase/calculating-ventilation-requirements-heat-kiln-room](https://hotkilns.com/support/pottery-kiln-knowledgebase/calculating-ventilation-requirements-heat-kiln-room) +9\. Complete Guide to Kiln Firing Temperatures \- SDS Industries, accessed on March 12, 2025, [https://www.kilncontrol.com/blog/kiln-firing-temperatures/](https://www.kilncontrol.com/blog/kiln-firing-temperatures/) +10\. Cones \- Kiln Room \- Bailey Pottery, accessed on March 12, 2025, [https://www.baileypottery.com/kiln-room/store-firing-accessories-safety-cones.html](https://www.baileypottery.com/kiln-room/store-firing-accessories-safety-cones.html) +11\. Orton Cone Chart \- The Ceramic Shop, accessed on March 12, 2025, [https://www.theceramicshop.com/content/457/orton-cone-chart/](https://www.theceramicshop.com/content/457/orton-cone-chart/) +12\. Orton Cone Chart | Cone Temperature Chart \- Sheffield Pottery, accessed on March 12, 2025, [https://www.sheffield-pottery.com/collections/orton-cone-chart](https://www.sheffield-pottery.com/collections/orton-cone-chart) +13\. Understanding the Duration of Various Firing Processes \- Kiln Fire, accessed on March 12, 2025, [https://kilnfire.com/blog/how-long-to-fire-clay](https://kilnfire.com/blog/how-long-to-fire-clay) +14\. Techno File: Kiln Firing Schedules \- Ceramic Arts Network, accessed on March 12, 2025, [https://ceramicartsnetwork.org/ceramics-monthly/ceramics-monthly-article/techno-file-kiln-firing-schedules](https://ceramicartsnetwork.org/ceramics-monthly/ceramics-monthly-article/techno-file-kiln-firing-schedules) +15\. Manual, Automatic, & Digital Controller Options \- Kiln Frog, accessed on March 12, 2025, [https://kilnfrog.com/pages/what-kind-of-controller-is-best](https://kilnfrog.com/pages/what-kind-of-controller-is-best) +16\. 14 Types of Electric Kiln Temperature Controllers | SDS Industries, accessed on March 12, 2025, [https://www.kilncontrol.com/blog/electric-kiln-temperature-controllers-2/](https://www.kilncontrol.com/blog/electric-kiln-temperature-controllers-2/) +17\. Exploring Different Kiln Control Methods \- SDS Industries, accessed on March 12, 2025, [https://www.kilncontrol.com/blog/kiln-controls/](https://www.kilncontrol.com/blog/kiln-controls/) +18\. Kiln Controller \- Digitalfire, accessed on March 12, 2025, [https://digitalfire.com/glossary/kiln+controller](https://digitalfire.com/glossary/kiln+controller) +19\. How do I test for accurate temperatures in my kiln?, accessed on March 12, 2025, [https://kilnfrog.com/blogs/frogblog/how-do-i-test-for-accurate-temperatures-in-my-kiln](https://kilnfrog.com/blogs/frogblog/how-do-i-test-for-accurate-temperatures-in-my-kiln) +20\. Kiln Controllers \- The Ceramic Shop, accessed on March 12, 2025, [https://www.theceramicshop.com/store/category/39/198/kiln-controllers/](https://www.theceramicshop.com/store/category/39/198/kiln-controllers/) \ No newline at end of file diff --git a/projects/oven/kpot/specs.xlsx b/projects/oven/kpot/specs.xlsx new file mode 100644 index 0000000000000000000000000000000000000000..f8d965df27a9cba062724ac3a395b069b68f3f8c GIT binary patch literal 6601 zcmaKQ1z1$u_x21(jx6p*Lmj5oadaq&g`|{{jRlMbrtj*qyTJeYyiN}0tWcSK&an_NVu&N5BK%C z_*EOEgZJjMBd<{QbD;$(?97}7RmBDdLE2U(``gtovO1rBI+G(Iz8O)`5$WjbcWLr= zQPrMvk(Wi~$qQ}07idi^rarly1DB2-JiK1A$uh{YEMalRh>IA z46eP(s#)H-;6`FR_%mFOMYvD>z|zrce9D`=ifTmh44a3&x5jHD87^KA>?9CJ2NLx4WHfgytM_mY2}yNXPvYzowpyLiHJyc%LeQWNck8Zc0}^PJE1* zKK0UTia&d&iomC=xM_QTW?`*sDF0ELfG%qUM0Y+)7XV9;*)?cymN08#15qOl9N>aX z`!^#OIG4C0yAPdA&wvY4+{R=k0tB+G?0NNj$(Vxj%BD7vX0ry{RG>x&GQcD|wcIFE zQT>M^*@U^PHeNUzMo|R#Lq<7zc?Ou+OQ)~9eB;e)T-t_bXp4gB9%@yZB{x9vrByAn z^jju=mi+w?-M(0K>ni>pp093%iZqUIb=4h$+;2scu=z<*WUI2v4o@E6UD@{Sc|6Xz zNX20o{-C6$o$4*|vonYM2XY#re)2U38MN+)CBx$}AA&_#!XG*NI!XSu7QB&IM8)H(L|0rwp*{z&PpgeTRCuDI4r*tw?Tca@slVzxtKv4teS+Kp(EVK zQw#e0LU-3Y%jx7b=2zQs?u(u-g}r*6d17b{<*yyt=}~!sfyF^`wsv90tCSlfjVKF! 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Type + Manual Injection +
Version + 1.4 +
Status + Mature +
Weight + 40 KG +
Dimensions + + Packaged : 50cm x 15 cm x 110cm
+ Assembled : 1.6m x 20 cm x 1.1m +
Voltage + 110V / 220V +
Flake size: + Small to Medium +
Shot size + 350 mm (barrel length) x 25 mm (barrel diameter) :
0.17 Liter | 171.81 cm³ | 150 gramm (PP) +
License + CERN Open Source Hardware License +
Authors + [PlasticHub S.L.](${author_link}) +
+ diff --git a/projects/oven/kpot/templates/shared/product_features.md b/projects/oven/kpot/templates/shared/product_features.md new file mode 100644 index 000000000..e69de29bb diff --git a/projects/oven/kpot/templates/shared/resources.md b/projects/oven/kpot/templates/shared/resources.md new file mode 100644 index 000000000..e69de29bb