Leave room between the guide lines you ve drawn and where you cut.
How to shape abs plastic sheet.
Drill holes in the plastic along the guide lines so your blade has places to start and stop easily.
Dipping the abs into a bath of cool water will help quickly lower its temperature so it will hold its new shape.
Make several scores along the guideline.
Then mark the cutting line with a highlighter.
Measure the size of the of the overall piece you need.
Make sure the sheet is just big enough for the form.
Using a plastic cutter prepare the work surface and lay the plastic on it.
Depending on how deformed your part was originally you may need to repeat the process two or three times slowly bringing the abs back into its proper shape a little more each time.
Use a plastic cutting knife to cut the sheet down to the general overall size.
This will help prevent the plastic from warping.
Secure it with a clamp to prevent the material from moving.
A common and safe method of reshaping abs plastic is to use boiling water which reduces risks involved with accidentally overheating abs.