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Clarke 1820

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Materials and Settings

The Clark manual only says "2.0mm polystyrene will take approximately 60 seconds. PVC and cast acrylic will take longer". The following was complied from information in the Formech guide (30sec x 2mm matches Clarks' 2mm @ 60sec).

MaterialFormabilityHeat sec/mmnotes
Co-Polyester (PETG) Very Good 30
Polystyrene (PS)Very Good30
PVC Good 30 tendency to web
ABS Good40 predry
Polycarbonate (PC)Good60predry
Polypropylene (PP)Difficult50
Polyethylene (PE) Difficult50 PE foam forms well

VIVAK-PETG-Fabrication-Guide (2.2MB PDF)
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