Step 25: Platen: Overview
Save yourself the pain and go buy new, clean plastic. You won't regret it.
2 11x15" cuts of 1/8" clear acrylic.
2 6x6" squares of 1/4" clear acrylic.
Some methylene chloride.
A syringe or applicator.
A tongue hinge.
A chunk of scrap wood (or two).