latest :)

sheetpress/components/900_Moulds/1150x1150-20-back/cad/equations.txt

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+"Flange-Distance"= 120
+"D2@Sketch11"="Flange-Distance"
+"Mould-Frame-Height" = 15
+"Mould-Flange-Bore" = 8.2
+"Mould-Flange-Width"= 20
+"Mould-Flange-Bore-Offset"= 0.5
+"D6@Sketch7"="Mould-Flange-Bore"
+"D3@Sketch7"="Mould-Flange-Width"
+"D1@Sketch7"="Mould-Frame-Height"
+"D4@Sketch11"="Mould-Flange-Bore"
+"D1@Sketch11"="Mould-Flange-Width"
+"D3@Sketch11"="Mould-Frame-Height"
+"D6@Sketch11"="Mould-Flange-Bore-Offset"
+"Mould-Flange-1-Offset-U"= 120
+"D1@Sketch17"="Mould-Flange-Width"
+"D3@Sketch17"="Mould-Flange-Bore"
+"D4@Sketch17"="Mould-Flange-Bore-Offset"
+"D1@Sketch18"="Mould-Flange-Width" * 0.6
+"D2@Sketch18"="Thickness" * 0.4
+"D5@Sketch7"="Flange-Distance"
+"D4@Sketch7"="Mould-Flange-Bore-Offset"
+"D2@Sketch17"="Mould-Frame-Height"
+"D5@Sketch17"="Flange-Distance"+"Mould-Flange-1-Offset-U"

sheetpress/components/900_Moulds/1150x1150-20-back/readme.md

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+## Mould - Cassandra - 650
+
+### 
+
+### General
+
+width : 640
+mould frame thickness : 15mm - square
+
+### 
+
+### Top / Bottom Sheet
+
+
+
+thickness : 2mm
+
+### 
+
+### Flanges
+
+* 3 each side, for M6 bolts, M7 bore (tolerance / clearance due to bending)
+* slot to ease hand bending
+* flange width : 20mm
+* distribution : 25% from the corner, one at the center
+* the upper sheet has its flanges offset - choose a good distance :)
+
+### 
+
+### Mould Frame
+
+### 
+
+### holes - sides
+
+* one for assembly, each end
+* next, 35mm away : bearing mounts (M8 bolts), each end
+* flange mounts, M6
+* venting / overflow holes, closable, M8 bolts, also 2 each end
+
+### 
+
+### holes - top
+
+* we will use M8 dowel pins to stack up mould frames, we'd need one pin in every corner, but also one in the center

sheetpress/components/900_Moulds/1150x1150-20-back/templates/bazar/fragments/footer.md

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+${social}

sheetpress/components/900_Moulds/1150x1150-20-back/templates/bazar/fragments/mini_specs.md

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+<span id="specs" style="padding: 16px">
+    <table class="center specs">
+        <tbody>
+            <tr>
+                <td>Type
+                </td>
+                <td>Sheetpress
+                </td>
+            </tr>
+            <tr>
+                <td>Version
+                </td>
+                <td>0.1
+                </td>
+            </tr>
+            <tr>
+                <td>Weight
+                </td>
+                <td>80 - 120 Kg
+                </td>
+            </tr>
+            <tr>
+                <td> Voltage
+                </td>
+                <td>380V
+                </td>
+            </tr>
+            <tr>
+                <td> Status
+                </td>
+                <td>Development
+                </td>
+            </tr>
+            <tr>
+                <td> Sheet Size
+                </td>
+                <td>60 x 60 cm
+                </td>
+            </tr>
+            <tr>
+                <td> Plate Size
+                </td>
+                <td>70 x 70 cm
+                </td>
+            </tr>
+             <tr>
+                <td> Pressure
+                </td>
+                <td> 2-5 tons, depending on the sheet thickness
+                </td>
+            </tr>
+            <tr>
+                <td> Input Flake Size
+                </td>
+                <td>Medium, Small
+                </td>
+            </tr>
+            <tr>
+                <td> Gearbox ratio
+                </td>
+                <td> 1:15
+                </td>
+            </tr>
+            <tr>
+                <td>Heaters
+                </td>
+                <td> 300 Watt x 32 (10kW)
+                </td>
+            </tr>
+        </tbody>
+    </table>
+</span>

sheetpress/components/900_Moulds/1150x1150-20-back/templates/bazar/fragments/product_resources.md

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+**Product Resources**
+
+- [3D Preview](${abs_url}/${product_rel}resources/edrawings.html)
+- [Product Page](${product_page})
+
+${product_howtos}

sheetpress/components/900_Moulds/1150x1150-20-back/templates/jekyll/build.md

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+### Build the machine

sheetpress/components/900_Moulds/1150x1150-20-back/templates/jekyll/footer.md

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+${social}

sheetpress/components/900_Moulds/1150x1150-20-back/templates/jekyll/media.md

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+### Media

sheetpress/components/900_Moulds/1150x1150-20-back/templates/jekyll/mini_specs.md

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+<span id="specs" style="padding: 16px">
+    <table class="center specs">
+        <tbody>
+            <tr>
+                <td>Type:
+                </td>
+                <td>Sheetpress
+                </td>
+            </tr>        
+            <tr>
+                <td>Version:
+                </td>
+                <td>0.1
+                </td>
+            </tr>
+            <tr>
+                <td> Status:
+                </td>
+                <td> Development
+                </td>
+            </tr>
+            <tr>
+            <td> Authors </td>
+                <td>
+                 <li>[PlasticHub S.L.](${author_link})</li>
+                </td>
+            </tr>
+        </tbody>
+    </table>
+</span>

sheetpress/components/900_Moulds/1150x1150-20-back/templates/jekyll/product_resources.md

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+- [3D Preview](${product_3d})
+- [Electrical wiring](${product_wiring})

sheetpress/components/900_Moulds/1150x1150-20-back/templates/jekyll/resources.md

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+### Resources

sheetpress/components/900_Moulds/1150x1150-20-back/templates/shared/body.md

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+Flexible, modular dual sheetpress, including a heat and cooling press.
+
+## Details / Features
+
+- Sheet thickness up to 30mm
+- 15T of pressure
+- Stackable and interlockable (600x1300cm sheets)
+- cartridge heaters are embedded in the heat plates, enabling 30% better heat efficiency
+- Press plate options: heating, passive or active cooling
+- the hydraulic jack has a pneumatic port, to use a compressor instead

sheetpress/components/900_Moulds/1150x1150-20-back/templates/shared/product_features.md

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+[%- i18n %]
+- Sheet thickness up to 30mm
+- 15T of pressure
+[%- i18n-end %]

sheetpress/components/900_Moulds/1150x1150-20-back/templates/site/build.md

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+### Build the machine

sheetpress/components/900_Moulds/1150x1150-20-back/templates/site/calculations.md

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+
+## Force Calculations
+
+to demonstrate that the motor and gearbox are capable of at least 2 tons clamping force, lifting a platten that weighs 20kg
+
+Lead screw calculation:
+
+```math
+Torque(raise) = F x Dm/2x(L+u x PI x DM)/(PI x Dm-u x L)
+```
+
+[See leadscrew force torque calculator](https://daycounter.com/Calculators/Lead-Screw-Force-Torque-Calculator.phtml)
+
+Toggle clamp calculations:
+
+```math
+P = F a / 2 h
+```
+
+where P = input force, F = output force, a = arm length, h = height (displacement of toggle pivot from line between end pivots)
+
+[See toggle joint calculation](https://www.engineeringtoolbox.com/toggle-joint-d_2077.html)
+
+Torque of 25Nm from the gearbox (as claimed) on a 20mm screw with a 4mm pitch and a brass nut with a frictional coefficient of 0.06 gives about 1575N pushing force on the nut.
+
+Connected to an equal toggle mechanism of 125mm arm lengths, this would generate a perpendicular force of 820 newtons (80Kg) at the bottom of the stroke (toggle displacement 120mm), 98438 newtons (10 tons) at the top of the stroke (toggle displacement 1mm).
+
+With a toggle diplacement of 5mm (press almost fully closed) the force generated is 19688 newtons or around 2 tons.
+
+18nm from the gearbox (1.2NM x 15:1) gives 1135N push on the screw, generating 70938N (7.2T) at 1mm toggle displacement and 14118N (1.4T)at 5mm
+
+Using a higher frictional coefficient of 0.1, torque of 18Nm from the gearbox gives 690N push on the screw, generating 359N (40Kg) at 120mm displacement 8628N (900Kg) at 5mm and 43125 (4.4T) at 1mm displacement. This seems like a more realistic estimate, given that friction on the collar and toggle pivot joints is not accounted for in this equation. Even half this would give a comfortable 2 ton max clamping force and still be able to lift 20kg from fully open. Also these calculations are based on the smallest stepper in the Nema 23 package size, up to 3nm are available
+
+More detailed calculations will be performed using the [calculator](https://cdn.automationdirect.com/static/manuals/surestepmanual/appxc.pdf)
+
+At max motor speed of 400 RRM with the 15:1 gearbox and 4mm pitch screw, the motor would move the nut on the screw at 1.7mm/s, meaning the plattens would take about 70s to perform a full 120mm stroke. If a 10:1 gearbox were used, it would take 45s.
+

sheetpress/components/900_Moulds/1150x1150-20-back/templates/site/footer.md

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+${social}

sheetpress/components/900_Moulds/1150x1150-20-back/templates/site/full_spec.md

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+---
+title: "Cassandra v1.0 - revision-A DataSheet" 
+permalink: "/specs/products/cassandra"
+layout: "print"
+---
+
+## {{page.title}}
+
+### Specification
+
+| Specification    |     |
+|----------|-------------|
+| Title   |  Cassandra     |
+| Version | v1.0 |
+| Type   |     Sheetpress   |
+| Weight |   100 kg   |
+| Package Dimension   | 1052 x 1100 x 900 mm |
+| Power (W) | 3 kW |
+| Voltage | 380V or 220V |
+| Amperage | 16A |
+| Input Flake Size  | Small  |
+| Screw diameter | 30mm |
+| Rated Motor Power | 3 kW |
+| Motor Type   |    |
+
+<div class="col">
+    <h3 class="text-center" id="dimensions">Dimensions</h3>
+    <div class="vertical-margin vertical-gap">
+        {% include product_image.html size="medium" src="/products/cassandra/drawings/dimensions.jpg" target="/products/cassandra/drawings/dimensions.PDF" %}
+    </div>
+</div>
+
+### Components & Parts
+
+{% include product_image.html size="small" src="/products/cassandra/drawings/parts.jpg" %}

sheetpress/components/900_Moulds/1150x1150-20-back/templates/site/product_resources.md

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+- [3D Preview](${product_3d})
+- [Electrical wiring](${product_wiring})

sheetpress/components/900_Moulds/1150x1150-20-back/templates/site/resources.md

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+### Resources