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formech_1372:formech_1372 [2021/08/23 01:45] – [Troubleshooting] formlab | formech_1372:formech_1372 [2023/05/12 01:15] – [Tested mould materials include:] formlab | ||
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* Small: '' | * Small: '' | ||
* Large: '' | * Large: '' | ||
+ | |||
+ | === Pre-drying === | ||
+ | * PMMA: 70°C 4 hours | ||
+ | |||
[[https:// | [[https:// | ||
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+ | |||
+ | ===== Mould tips ===== | ||
+ | |||
+ | <WRAP center round important 60%> | ||
+ | Moulds should not contain moisture or dust (!) since it could harm the vacuum pump. | ||
+ | </ | ||
+ | |||
+ | |||
+ | * Can the mould be removed after forming? | ||
+ | * {{: | ||
+ | * {{: | ||
+ | * {{: | ||
+ | * Include draft angles:\\ {{: | ||
+ | * Can the vacuum reach all pockets? | ||
+ | * {{: | ||
+ | * Can it withstand the pressure? | ||
+ | * Can it withstand the heat? | ||
+ | ==== Tested mould materials include: ==== | ||
+ | * **Plaster** | ||
+ | * <color orange> | ||
+ | * **Wood** | ||
+ | * <color orange> | ||
+ | * **PU foam** | ||
+ | * <color orange> | ||
+ | * <color green> | ||
+ | * <color green> | ||
+ | * <color green> | ||
+ | * <color green> | ||
+ | * <color red> | ||
+ | * <color red> | ||
+ | * **3D printed parts** | ||
+ | * <color red> | ||
+ | * Plastic deforms: infill becomes visible if not enough top layers or walls. | ||
+ | * ... | ||
===== Available sheet materials ===== | ===== Available sheet materials ===== | ||
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^ Thickness ^ Size ^ Cost (per sheet) ^ | ^ Thickness ^ Size ^ Cost (per sheet) ^ | ||
- | | 1mm | Large - 1370 x 660mm | €13,00 | | + | | 1mm | Large - 1370 x 660mm | €16,10 | |
- | | 1mm | Small - 500 x 500mm | €3,90 | | + | | 2mm | Large - 1370 x 660mm | €32, |
- | | 2mm | Small - 500 x 500mm | €6,63 | | + | | 1mm | Small - 500 x 500mm | €4,20 | |
- | | 3mm | Small - 500 x 500mm | €9,62 | | + | | 2mm | Small - 500 x 500mm | €7,14 | |
+ | | 3mm | Small - 500 x 500mm | €10,36 | | ||
---- | ---- | ||
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^ Color ^ Light ^ Thickness | ^ Color ^ Light ^ Thickness | ||
- | | White | translucent | 3mm | large - 1370 x 660mm | €36,40 | | + | | White | translucent | 3mm | large - 1370 x 660mm | €39,20 | |
- | | White | translucent | 3mm | small - 500 x 500mm | €10,40 | | + | | White | translucent | 3mm | small - 500 x 500mm | €11,20 | |
- | | Green | transparent | 3mm | small - 500 x 500mm | €15,60 | | + | | Green | transparent | 3mm | small - 500 x 500mm | €16,80 | |
- | | Light blue | translucent | 3mm | large - 1370 x 660mm | €54,60 | | + | | Light blue | translucent | 3mm | large - 1370 x 660mm | €58,80 | |
- | | Light blue | translucent | 3mm | small - 500 x 500mm | €15,60 | | + | | Light blue | translucent | 3mm | small - 500 x 500mm | €16,80 | |
- | | Dark blue | transparent | 3mm | large - 1370 x 660mm | €54,60 | | + | | Dark blue | transparent | 3mm | large - 1370 x 660mm | €58,80 | |
- | | Dark blue | transparent | 3mm | small - 500 x 500mm | €15,60 | | + | | Dark blue | transparent | 3mm | small - 500 x 500mm | €16,80 | |
- | | Yellow | transparent | 3mm | small - 500 x 500mm | €15,60 | | + | | Yellow | transparent | 3mm | small - 500 x 500mm | €16,80 | |
- | | Cream | transparent | 3mm | large - 1370 x 660mm | €54,60 | | + | | Cream | transparent | 3mm | large - 1370 x 660mm | €58,80 | |
- | | Cream | transparent | 3mm | small - 500 x 500mm | €15,60 | | + | | Cream | transparent | 3mm | small - 500 x 500mm | €16,80 | |
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^ Color ^ Surface finish | ^ Color ^ Surface finish | ||
- | | white | matte / glossy | 1mm | 2000X1200 | €18,20 | | + | | white | matte / glossy | 1mm | 2000X1200 | €19,63 | |
- | | white | matte / glossy | 1,5mm | 2000X1200 | €26,80 | | + | | white | matte / glossy | 1,5mm | 2000X1200 | €28,88 | |
- | | white | matte / matte | 4mm | 2000X1000 | €45,30| | + | | white | matte / matte | 4mm | 2000X1000 | €63,42| |
- | | black | matte / matte | 1mm | 2000X1200 | €20,50 | | + | | black | matte / matte | 1mm | 2000X1200 | €22,06 | |
- | | black | matte / glossy | 1,5mm | 2000X1200 | €32,70 | | + | | black | matte / glossy | 1,5mm | 2000X1200 | €35,19 | |
- | | red | matte / matte | 1mm | 2000X1200 | €20,50 | | + | | red | matte / matte | 1mm | 2000X1200 | €22,06 | |
- | | red | matte / glossy | 1,5mm | 2000X1200 | €32,70 | | + | | red | matte / glossy | 1,5mm | 2000X1200 | €35,19 | |
- | | green | matte / matte | 1,5mm | 2000X1200 | €31,60 | | + | | green | matte / matte | 1,5mm | 2000X1200 | €34,03 | |
- | | blue | matte / glossy | 1,5mm | 2000X1200 | €32, | + | |
=== How much does it cost? === | === How much does it cost? === | ||
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* startup cost: €2: only when vacuum form machine is used | * startup cost: €2: only when vacuum form machine is used | ||
* plastic sheet cost: cost sheet, including VAT and transportation | * plastic sheet cost: cost sheet, including VAT and transportation | ||
- | * material multiplier: 30%: item cost * 1,3 | + | * material multiplier: item cost * 1,4 |
- | * machine time cost: €5 per hour (€0, | + | * machine time cost: €8 per hour (€0, |
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* Narrow heating band | * Narrow heating band | ||
* will crystallise if over heated | * will crystallise if over heated | ||
- | |||
===== General tips ===== | ===== General tips ===== | ||
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* // | * // | ||
* // | * // | ||
+ | * **Bubble moulding**: The table should be lowered. If it's in the up-position, | ||
===== Clamping tips for high gauge sheets ===== | ===== Clamping tips for high gauge sheets ===== | ||
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- | ===== Machine | + | ===== Machine |
- | === PMMA 3mm === | + | |
- | * heater 75% en 80% | + | |
- | * 230 sec heating (not any longer) | + | |
- | * 60 sec cooling | + | |
- | * --> Worked reasonably well | + | |
- | * --> This is lower heat for a longer period | + | |
- | === Medium Gauge Film (0, | + | ==== PS ==== |
- | * profile: 1mm PET (heater 85%) | + | * 1mm (Experimental v2) |
- | * heating: 8 seconds | + | * Power: 70% |
- | * vacuum: manual operation: start-stop technique to avoid holes if there are large cavities | + | * Heating: 45 seconds |
+ | * 2.5mm (Experimental v2) | ||
+ | * Power: 70% | ||
+ | * Heating: 85 seconds | ||
+ | |||
+ | ==== PETG ==== | ||
+ | * 2mm (OK) | ||
+ | * Power: 70% | ||
+ | * Heating: 70 seconds | ||
+ | |||
+ | ==== PMMA ==== | ||
+ | * 3mm | ||
+ | * pre-dry: 4 hours at 70°C (between 70-80°C): no blisters | ||
+ | * If using the window: add shims: 3 on each side. | ||
+ | * heater 70% (and 75% at the edges) | ||
+ | * 125 sec heating | ||
+ | * (without peeking in between) | ||
+ | * This results in ±168°C: nice and flexible. | ||
+ | * Sheet forming temperature: | ||
+ | * 60 sec cooling | ||
+ | |||
+ | |||
+ | ==== Medium Gauge Film ==== | ||
+ | | ||
+ | | ||
+ | * heating: 8 seconds | ||
+ | * vacuum: manual operation: start-stop technique to avoid holes if there are large cavities | ||
---- | ---- | ||
===== Troubleshooting ===== | ===== Troubleshooting ===== | ||
+ | ==== Preset loading gives wrong values ==== | ||
+ | |||
+ | Reason of problem: touch screen input is too fast for the slow computer (PLC) | ||
+ | |||
+ | Fix: | ||
+ | * **Use firm, deliberate presses with your finger** (not a stylus or fingernail). | ||
+ | * Don’t try to be too fast. | ||
+ | |||
+ | |||
==== Sheet pulls itself out of the clamping frame ==== | ==== Sheet pulls itself out of the clamping frame ==== | ||
// | // |