415 lines
29 KiB
JSON
415 lines
29 KiB
JSON
{
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"tags": [
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"product",
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"injection",
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"extrusion",
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"mould"
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],
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"slug": "make-plaster-moulds-for-large-products",
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"_createdBy": "michael_makes_",
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"title": "Make plaster moulds for large products",
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"id": "1PwZ8Ikcj4QVCgF2NYtk",
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"description": "This guide details the process of creating and using plaster molds, an effective method for crafting larger, intricate products.",
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"_deleted": false,
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"_contentModifiedTimestamp": "2023-06-14T11:02:19.800Z",
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"creatorCountry": "",
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"previousSlugs": [
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"make-plaster-moulds-for-large-products"
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],
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"category": {
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"_created": "2022-05-09T21:18:16.628Z",
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"_modified": "2022-05-09T21:18:16.628Z",
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"_deleted": false,
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"label": "Moulds",
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"_id": "PNQc9KjspF0xU4fMYEin"
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},
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"_modified": "2023-12-30T18:56:32.835Z",
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"_created": "2020-05-07T02:50:47.761Z",
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"comments": [
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{
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"text": "Thank for teaching us this! Im a beginner in this recycling plastic world, but I have some plaster molds that I wanted to use with plasctic but I didnt know if it would work. Im gonna try to heat up the plastic in a toaster and then press in my mold with some mould release. Thanks!",
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"_id": "Z0QMxpSgA5WVK5h2gCyg",
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"creatorCountry": "es",
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"_creatorId": "grillou",
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"creatorName": "grillou",
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"_created": "2023-04-06T00:08:05.354Z"
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}
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],
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"difficulty_level": "Medium",
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"mentions": [],
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"votedUsefulBy": [
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"tambet",
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"marilzahonorato-",
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"sigolene",
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"apanomeria",
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"grillou",
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"kzli",
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"precious-plastic-luebeck",
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"yakub-"
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],
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"total_views": 486,
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"updated": "2020-05-11T15:15:00.110Z",
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"src": "/resources/howtos/make-plaster-moulds-for-large-products/michael-makes-stool-1.jpg"
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"moderation": "accepted",
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"_id": "1PwZ8Ikcj4QVCgF2NYtk",
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"total_downloads": 0,
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"time": "< 1 week",
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"files": [],
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"steps": [
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{
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"images": [
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{
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"name": "IMG_3710.jpg",
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"updated": "2020-05-07T02:50:32.003Z",
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"downloadUrl": "https://firebasestorage.googleapis.com/v0/b/onearmyworld.appspot.com/o/uploads%2Fv3_howtos%2F1PwZ8Ikcj4QVCgF2NYtk%2FIMG_3710.jpg?alt=media&token=280d736a-d7b7-4714-ae74-f5d674187743",
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},
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"size": 175011,
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"type": "image/jpeg",
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"fullPath": "uploads/v3_howtos/1PwZ8Ikcj4QVCgF2NYtk/IMG_3598.jpg",
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"updated": "2020-05-07T02:50:30.194Z",
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"contentType": "image/jpeg",
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"timeCreated": "2020-05-07T02:50:30.194Z",
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"downloadUrl": "https://firebasestorage.googleapis.com/v0/b/onearmyworld.appspot.com/o/uploads%2Fv3_howtos%2F1PwZ8Ikcj4QVCgF2NYtk%2FIMG_3598.jpg?alt=media&token=fcb7b35e-4a23-4d62-bdb5-cd2c72de8665",
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"alt": "IMG_3598.jpg"
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}
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],
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"title": "Consider pros and cons",
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"text": "## Overview\n\nPlaster molds have a limited lifespan and may not be suitable for regular use in plastic processing. However, they are useful for producing large, solid items and as a prototyping method to test mold designs before milling them into aluminum blocks.\n\n## Required Materials\n\n- Extruder machine\n- Shredded plastic\n- Casting plaster\n- Mold release agent\n- Model or object for replication\n- Melamine or plywood\n- Heat gun\n- Optional: paint, chopped fiberglass, shellac",
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"_animationKey": "unique1"
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},
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{
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"_animationKey": "unique2",
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"title": "Make a model to replicate",
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"images": [
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"timeCreated": "2020-05-07T02:50:34.165Z",
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"fullPath": "uploads/v3_howtos/1PwZ8Ikcj4QVCgF2NYtk/IMG_3506.jpg",
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"contentType": "image/jpeg",
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"name": "IMG_3506.jpg",
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"type": "image/jpeg",
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"src": "/resources/howtos/make-plaster-moulds-for-large-products/img_3506.jpg",
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"alt": "IMG_3506.jpg"
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},
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"size": 189766,
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"timeCreated": "2020-05-07T02:50:34.989Z",
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"contentType": "image/jpeg",
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"downloadUrl": "https://firebasestorage.googleapis.com/v0/b/onearmyworld.appspot.com/o/uploads%2Fv3_howtos%2F1PwZ8Ikcj4QVCgF2NYtk%2FIMG_3587.jpg?alt=media&token=2d1a98c2-a8ef-4c94-a0f5-03cd745f1edd",
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"updated": "2020-05-07T02:50:34.989Z",
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"name": "IMG_3587.jpg",
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"fullPath": "uploads/v3_howtos/1PwZ8Ikcj4QVCgF2NYtk/IMG_3587.jpg",
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"src": "/resources/howtos/make-plaster-moulds-for-large-products/img_3587.jpg",
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"alt": "IMG_3587.jpg"
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},
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{
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"updated": "2020-05-07T02:50:34.619Z",
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"size": 258194,
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"downloadUrl": "https://firebasestorage.googleapis.com/v0/b/onearmyworld.appspot.com/o/uploads%2Fv3_howtos%2F1PwZ8Ikcj4QVCgF2NYtk%2FIMG_3519.jpg?alt=media&token=52f9b2eb-55d2-4f5d-a53d-675423102d89",
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"fullPath": "uploads/v3_howtos/1PwZ8Ikcj4QVCgF2NYtk/IMG_3519.jpg",
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"timeCreated": "2020-05-07T02:50:34.619Z",
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"contentType": "image/jpeg",
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"type": "image/jpeg",
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"name": "IMG_3519.jpg",
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"alt": "IMG_3519.jpg"
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}
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],
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"text": "Select a model or object to create your plaster mold around, such as a self-made model, a 3D print, or a toy. Determine the number of parts needed for your mold; for our project, a two-part mold was used.\n\nHere, the shape was cut from foam using a homemade hot wire and refined by hand sanding.\n\nEnsure a smooth surface, as imperfections will be visible in the final product. Keep sanding, filling, and painting as needed."
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},
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{
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"title": "Make a box to cast your mould",
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"text": "Construct a box around your model, ensuring it is sealed and secure to prevent it from floating when plaster is poured. Melamine or plywood may be used for the box.\n\nConsider applying a mold release, such as petroleum jelly, to facilitate the release of the plaster.\n\nReference pins can be useful to ensure the molds align correctly later.",
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"images": [
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"fullPath": "uploads/v3_howtos/1PwZ8Ikcj4QVCgF2NYtk/IMG_3594.jpg",
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"updated": "2020-05-07T02:50:37.206Z",
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"size": 259474,
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"src": "/resources/howtos/make-plaster-moulds-for-large-products/img_3594.jpg",
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"alt": "IMG_3594.jpg"
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"size": 235835,
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"fullPath": "uploads/v3_howtos/1PwZ8Ikcj4QVCgF2NYtk/IMG_3537.jpg",
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"contentType": "image/jpeg",
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"name": "IMG_3537.jpg",
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"timeCreated": "2020-05-07T02:50:37.151Z",
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"updated": "2020-05-07T02:50:37.151Z",
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"downloadUrl": "https://firebasestorage.googleapis.com/v0/b/onearmyworld.appspot.com/o/uploads%2Fv3_howtos%2F1PwZ8Ikcj4QVCgF2NYtk%2FIMG_3537.jpg?alt=media&token=a677fb07-33aa-4a5a-bfc6-20e960395712",
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"updated": "2020-05-07T02:50:37.110Z",
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"downloadUrl": "https://firebasestorage.googleapis.com/v0/b/onearmyworld.appspot.com/o/uploads%2Fv3_howtos%2F1PwZ8Ikcj4QVCgF2NYtk%2FIMG_3529.jpg?alt=media&token=63bf3e08-e0dc-4a28-97d3-198aa87549a3",
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"size": 174775,
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"name": "IMG_3529.jpg",
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"timeCreated": "2020-05-07T02:50:37.110Z",
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"type": "image/jpeg",
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"contentType": "image/jpeg",
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"fullPath": "uploads/v3_howtos/1PwZ8Ikcj4QVCgF2NYtk/IMG_3529.jpg",
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"src": "/resources/howtos/make-plaster-moulds-for-large-products/img_3529.jpg",
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"alt": "IMG_3529.jpg"
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}
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],
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"_animationKey": "unique3"
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},
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{
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"text": "Mix the casting plaster following the manufacturer's instructions. Add chopped fiberglass for enhanced mold durability.\n\nPour the mixture into the box, filling it to twice the model's height.\n\nAfter pouring, tap the box with a hammer for a few minutes to release air pockets.\n\nLet the plaster cure for two days before demolding.",
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"title": "Mix and pour the plaster",
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"_animationKey": "uniquee6o9dq",
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"images": [
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"updated": "2020-05-07T02:50:39.507Z",
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"name": "IMG_3541.jpg",
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"fullPath": "uploads/v3_howtos/1PwZ8Ikcj4QVCgF2NYtk/IMG_3541.jpg",
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"src": "/resources/howtos/make-plaster-moulds-for-large-products/img_3541.jpg",
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"fullPath": "uploads/v3_howtos/1PwZ8Ikcj4QVCgF2NYtk/IMG_3599.jpg",
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"name": "IMG_3599.jpg",
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"downloadUrl": "https://firebasestorage.googleapis.com/v0/b/onearmyworld.appspot.com/o/uploads%2Fv3_howtos%2F1PwZ8Ikcj4QVCgF2NYtk%2FIMG_3599.jpg?alt=media&token=76720712-0b81-455c-a1d0-c1b59ba11709",
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"timeCreated": "2020-05-07T02:50:39.361Z",
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"updated": "2020-05-07T02:50:39.361Z",
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},
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{
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"_animationKey": "unique6151ch",
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"title": "Air dry and seal",
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"text": "After completing both parts of your mold, allow them to air dry for a few days until they are touch-dry and noticeably lighter. This indicates readiness for the next step.\n\nOptionally, apply a layer of shellac to the plaster surfaces. Once cured, use a mold release agent like silicone oil or petroleum jelly to prevent plastic from adhering, ensuring the mold's reusability.",
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"images": [
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{
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"updated": "2020-05-09T14:51:53.280Z",
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"contentType": "image/jpeg",
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"updated": "2020-05-09T14:51:53.433Z",
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"fullPath": "uploads/v3_howtos/1PwZ8Ikcj4QVCgF2NYtk/IMG_3548.jpg",
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"downloadUrl": "https://firebasestorage.googleapis.com/v0/b/onearmyworld.appspot.com/o/uploads%2Fv3_howtos%2F1PwZ8Ikcj4QVCgF2NYtk%2FIMG_3548.jpg?alt=media&token=61485b71-44c7-4a1a-bcc3-f0e2b169b68a",
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"alt": "IMG_3548.jpg"
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},
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"name": "IMG_3654.jpg",
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"updated": "2020-05-09T14:51:57.063Z",
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"contentType": "image/jpeg",
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"size": 328638,
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"downloadUrl": "https://firebasestorage.googleapis.com/v0/b/onearmyworld.appspot.com/o/uploads%2Fv3_howtos%2F1PwZ8Ikcj4QVCgF2NYtk%2FIMG_3654.jpg?alt=media&token=77567a10-fac4-492c-a7b0-e47b0724bce7",
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]
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},
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{
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"text": "### Preparing the Mold for Your Machine\n\n1. **Align and Clamp the Mold**: Secure the mold parts together so they are properly aligned.\n\n2. **Drill a Large Hole**: Create a large hole for attachment to the extruder machine.\n\n3. **Drill Indicator Holes**: Add smaller holes at various points to signal when the material reaches a certain level and to help relieve pressure buildup.",
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"_animationKey": "unique9eztar",
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"images": [
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"contentType": "image/jpeg",
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"timeCreated": "2020-05-07T02:50:46.991Z",
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"size": 270969,
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"name": "IMG_3667 copy.jpg",
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"downloadUrl": "https://firebasestorage.googleapis.com/v0/b/onearmyworld.appspot.com/o/uploads%2Fv3_howtos%2F1PwZ8Ikcj4QVCgF2NYtk%2FIMG_3667%20copy.jpg?alt=media&token=fa1478e1-030f-49b5-a864-355f1326bf7b",
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"updated": "2020-05-07T02:50:46.991Z",
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"fullPath": "uploads/v3_howtos/1PwZ8Ikcj4QVCgF2NYtk/IMG_3667 copy.jpg",
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"src": "/resources/howtos/make-plaster-moulds-for-large-products/img_3667_copy.jpg",
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"alt": "IMG_3667 copy.jpg"
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{
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"size": 235759,
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"contentType": "image/jpeg",
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"name": "IMG_3677 copy.jpg",
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"type": "image/jpeg",
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"timeCreated": "2020-05-07T02:50:45.548Z",
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"downloadUrl": "https://firebasestorage.googleapis.com/v0/b/onearmyworld.appspot.com/o/uploads%2Fv3_howtos%2F1PwZ8Ikcj4QVCgF2NYtk%2FIMG_3677%20copy.jpg?alt=media&token=15211ae4-d3e0-417b-95e7-8f07018c174a",
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"fullPath": "uploads/v3_howtos/1PwZ8Ikcj4QVCgF2NYtk/IMG_3677 copy.jpg",
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"alt": "IMG_3677 copy.jpg"
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}
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],
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"title": "Drill injection + relief holes"
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},
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{
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"_animationKey": "uniquevbk1nl",
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"text": "### Injection Molding Process\n\nDue to its slow nature, maintaining the mold's internal temperature is crucial. Ensure it remains heated; one effective method is by drilling large holes to allow hot air circulation from two heat guns.",
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"images": [
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{
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"size": 294619,
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"contentType": "image/jpeg",
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"name": "IMG_3666 copy.jpg",
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}
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],
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"title": "Heat your mould"
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},
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{
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"title": "Inject (using the extruder)",
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"_animationKey": "uniquen72gqq",
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"updated": "2020-05-07T02:50:55.358Z",
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"text": "Begin by heating your plaster mold. Simultaneously, activate the extruder and prepare the plastic. Once the mold is hot, commence the injection process. The duration may vary, ranging from a few minutes to several hours based on the product size. In this instance, it required approximately 2.5 hours to fill the mold.\n\nWhen the plastic reaches all reference points, indicating full injection, switch off the heat guns and extruder. Plug all holes to preserve pressure within the mold."
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},
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{
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"title": "Demould",
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"text": "Allow the product to cool at room temperature, which may take up to 12 hours due to the insulating properties of plaster. Carefully demould your product, ensuring the mold remains intact for future use.",
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"_animationKey": "uniquebd8hjd",
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"src": "/resources/howtos/make-plaster-moulds-for-large-products/img_3706_copy.jpg",
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"alt": "IMG_3706 copy.jpg"
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},
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{
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"_animationKey": "uniquev5rf1",
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"title": "Post processing",
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"images": [
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{
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"contentType": "image/jpeg",
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"name": "IMG_3697.jpg",
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"src": "/resources/howtos/make-plaster-moulds-for-large-products/img_3697.jpg",
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"alt": "IMG_3697.jpg"
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},
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{
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"type": "image/jpeg",
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"timeCreated": "2020-05-07T16:53:55.798Z",
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"size": 67756,
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"fullPath": "uploads/v3_howtos/1PwZ8Ikcj4QVCgF2NYtk/stool-detail.jpg",
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"downloadUrl": "https://firebasestorage.googleapis.com/v0/b/onearmyworld.appspot.com/o/uploads%2Fv3_howtos%2F1PwZ8Ikcj4QVCgF2NYtk%2Fstool-detail.jpg?alt=media&token=5bc05809-241d-4bc0-8939-9f6930d1ae71",
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"updated": "2020-05-07T16:53:55.798Z",
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"name": "stool-detail.jpg",
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"contentType": "image/jpeg",
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"src": "/resources/howtos/make-plaster-moulds-for-large-products/stool-detail.jpg",
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"alt": "stool-detail.jpg"
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}
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],
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"text": "If completed correctly, minimal post-processing is needed. Remove the injection point and relief channels. Clean the part line with a knife to reuse the shavings."
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},
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{
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"images": [
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{
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"downloadUrl": "https://firebasestorage.googleapis.com/v0/b/onearmyworld.appspot.com/o/uploads%2Fv3_howtos%2F1PwZ8Ikcj4QVCgF2NYtk%2Fmichael-makes-stool-1.jpg?alt=media&token=7753903d-a311-41c4-a1e4-3ec36e597e81",
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"size": 45820,
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"timeCreated": "2020-05-11T15:15:01.113Z",
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"contentType": "image/jpeg",
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"fullPath": "uploads/v3_howtos/1PwZ8Ikcj4QVCgF2NYtk/michael-makes-stool-1.jpg",
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"type": "image/jpeg",
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"updated": "2020-05-11T15:15:01.113Z",
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"name": "michael-makes-stool-1.jpg",
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"src": "/resources/howtos/make-plaster-moulds-for-large-products/michael-makes-stool-1.jpg",
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"alt": "michael-makes-stool-1.jpg"
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},
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{
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"contentType": "image/jpeg",
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"fullPath": "uploads/v3_howtos/1PwZ8Ikcj4QVCgF2NYtk/michael-makes-stool-2.jpg",
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"size": 40914,
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"type": "image/jpeg",
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"updated": "2020-05-11T15:15:01.235Z",
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"timeCreated": "2020-05-11T15:15:01.235Z",
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"name": "michael-makes-stool-2.jpg",
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"downloadUrl": "https://firebasestorage.googleapis.com/v0/b/onearmyworld.appspot.com/o/uploads%2Fv3_howtos%2F1PwZ8Ikcj4QVCgF2NYtk%2Fmichael-makes-stool-2.jpg?alt=media&token=870b6768-4944-41b3-83a1-6e54aeea64e7",
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"src": "/resources/howtos/make-plaster-moulds-for-large-products/michael-makes-stool-2.jpg",
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"alt": "michael-makes-stool-2.jpg"
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}
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],
|
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"text": "A time-consuming but effective low-tech mold-making technique. It cannot replace machined molds but is useful for prototyping larger, more organic shapes. This tutorial results in a stool crafted from old polypropylene chairs, showcasing the technique's potential for unique designs.\n\nYou can adjust the contrast by varying the colors of the plastics you feed into the extruder. In this tutorial, similar colors were used, resulting in minimal contrast, but this can be controlled to achieve the desired appearance.",
|
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"title": "That's it!",
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"_animationKey": "uniqueesu7hp"
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}
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],
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"fileLink": "",
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"content": "This guide details the process of creating and using plaster molds, an effective method for crafting larger, intricate products.\n\n## Overview\n\nPlaster molds have a limited lifespan and may not be suitable for regular use in plastic processing. However, they are useful for producing large, solid items and as a prototyping method to test mold designs before milling them into aluminum blocks.\n\n## Required Materials\n\n- Extruder machine\n- Shredded plastic\n- Casting plaster\n- Mold release agent\n- Model or object for replication\n- Melamine or plywood\n- Heat gun\n- Optional: paint, chopped fiberglass, shellac\n\nSelect a model or object to create your plaster mold around, such as a self-made model, a 3D print, or a toy. Determine the number of parts needed for your mold; for our project, a two-part mold was used.\n\nHere, the shape was cut from foam using a homemade hot wire and refined by hand sanding.\n\nEnsure a smooth surface, as imperfections will be visible in the final product. Keep sanding, filling, and painting as needed.\n\nConstruct a box around your model, ensuring it is sealed and secure to prevent it from floating when plaster is poured. Melamine or plywood may be used for the box.\n\nConsider applying a mold release, such as petroleum jelly, to facilitate the release of the plaster.\n\nReference pins can be useful to ensure the molds align correctly later.\n\nMix the casting plaster following the manufacturer's instructions. Add chopped fiberglass for enhanced mold durability.\n\nPour the mixture into the box, filling it to twice the model's height.\n\nAfter pouring, tap the box with a hammer for a few minutes to release air pockets.\n\nLet the plaster cure for two days before demolding.\n\nAfter completing both parts of your mold, allow them to air dry for a few days until they are touch-dry and noticeably lighter. This indicates readiness for the next step.\n\nOptionally, apply a layer of shellac to the plaster surfaces. Once cured, use a mold release agent like silicone oil or petroleum jelly to prevent plastic from adhering, ensuring the mold's reusability.\n\n### Preparing the Mold for Your Machine\n\n1. **Align and Clamp the Mold**: Secure the mold parts together so they are properly aligned.\n\n2. **Drill a Large Hole**: Create a large hole for attachment to the extruder machine.\n\n3. **Drill Indicator Holes**: Add smaller holes at various points to signal when the material reaches a certain level and to help relieve pressure buildup.\n\n### Injection Molding Process\n\nDue to its slow nature, maintaining the mold's internal temperature is crucial. Ensure it remains heated; one effective method is by drilling large holes to allow hot air circulation from two heat guns.\n\nBegin by heating your plaster mold. Simultaneously, activate the extruder and prepare the plastic. Once the mold is hot, commence the injection process. The duration may vary, ranging from a few minutes to several hours based on the product size. In this instance, it required approximately 2.5 hours to fill the mold.\n\nWhen the plastic reaches all reference points, indicating full injection, switch off the heat guns and extruder. Plug all holes to preserve pressure within the mold.\n\nAllow the product to cool at room temperature, which may take up to 12 hours due to the insulating properties of plaster. Carefully demould your product, ensuring the mold remains intact for future use.\n\nIf completed correctly, minimal post-processing is needed. Remove the injection point and relief channels. Clean the part line with a knife to reuse the shavings.\n\nA time-consuming but effective low-tech mold-making technique. It cannot replace machined molds but is useful for prototyping larger, more organic shapes. This tutorial results in a stool crafted from old polypropylene chairs, showcasing the technique's potential for unique designs.\n\nYou can adjust the contrast by varying the colors of the plastics you feed into the extruder. In this tutorial, similar colors were used, resulting in minimal contrast, but this can be controlled to achieve the desired appearance.",
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"keywords": "plaster molds, mold making, prototyping, injection molding, plastic processing, casting plaster, mold release agent, extrusion machine, handmade molds, low-tech mold-making",
|
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"resources": "### Tools\n\n- Drill (for creating injection and indicator holes)\n- Hammer (to release air pockets from plaster)\n- Homemade hot wire (for shaping foam models)\n- Sanding tools (to refine model surfaces)\n\n### Software\n\n- 3D modeling software (optional, for creating digital models to 3D print)\n\n### Hardware\n\n- Extruder machine (for injecting melted plastic)\n- Heat guns (x2, to maintain mold temperature during injection)\n- Melamine/plywood mold box (to contain plaster during molding)\n- 3D printer (optional, for creating replica models)",
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"references": "## Articles\n\n- [Instructions for Multi-Section Plaster Mold-Making - Bryan Yerian](http://bryanyerian.blogspot.com/2012/05/multi-section-plaster-mold-making-from.html)\n- ~~[How to Mix Plaster for Ceramic Molds - Ceramic Arts Network](https://ceramicartsnetwork.org/daily/article/Plaster-Mixing-101-How-to-Mix-Plaster-for-Ceramic-Molds)~~\n- ~~[Thrifty Plaster Molds Guide - Ceramic Arts Network](https://ceramicartsnetwork.org/daily/article/how-to-make-thrifty-plaster-molds-and-streamline-your-processes)~~\n- [Ceramic Mold Techniques - Goldsupplier](https://blog.goldsupplier.com/how-to-make-ceramic-molds/)\n- [Injection Molding Process - SyBridge](https://sybridge.com/injection-molding-guide/)\n- [Plaster Casting Process - Xometry](https://www.xometry.com/resources/casting/plaster-casting/)\n- [Injection Molding Guide - Crescent Industries](https://www.crescentind.com/complete-guide-to-plastic-injection-molding)\n- ~~[Fiberglass Mold Process - Undiscovered Classics](https://www.undiscoveredclassics.com/forgotten-fiberglass/tufftuff-crafts-building-a-sorrell-fiberglass-sports-tufftuff-part-3-the-plaster-splash-female-mold/)~~\n- [Rubber-Plaster Mold Casting - EngineeringTechnology.org](https://engineeringtechnology.org/manufacturing/casting-processes/rubber-plaster-mold-casting/)\n\n## Books\n\n- [Designing the Internet of Things - Wiley (PDF)](https://madsg.com/wp-content/uploads/2015/12/Designing_the_Internet_of_Things.pdf)\n\n## Papers\n\n- [Paperplaster Technique - AIC (PDF)](https://www.aic-iac.org/wp-content/uploads/1-CAP_Paperplaster.pdf)\n\n## YouTube\n\n- [Simple Plaster Mold Tutorial - YouTube](https://www.youtube.com/watch?v=puCgsxcH1_w)\n\n## Open Source Designs\n\n- [Plaster Mold Tutorial - Instructables](https://www.instructables.com/Design-Carved-Plaster-Prototype-Plaster-Mold/)\n- [Paper Plaster Mold Tutorial - Andrea Vinkovic](http://andrea-ceramics.blogspot.com/2015/05/tutorial-making-a-paper-plaster-mould.html)\n- [Plaster Mold Process - Ficus Ceramica](https://www.ficusceramica.com/post/building-a-plaster-mold)"
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} |