Holy Grail Project - Re-Usable Collapsible Cup from Sustainable Materials

Step 4 Obtaining the Plastic Sheet

Assuming you are using a folder for your source of plastic, you'll probably want to get one flat sheet out of it. Just grab that scalpel and split the folder along its seams. Usually you should end up with at least two large flat panels.

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If you never cut towards yourself, you'll never cut yourself. An age old adage.