Join Date: Sep 2007
Location: Baxter, Tennessee
It will not hurt your tools. I have turned all sorts of plastic, aluminum, copper and brass.
If it is fiberglass then you will need to turn so that you are cutting down hill with the grain on every cut. Otherwise you will lift the fibers.
If it is actually plexiglass or some other solid cast rod then ignore the message above. Take light cuts. If you hear weird chipping noises and don't have a good finish then you are cutting to fast or your tool is dull. Some people use scraper on plastic. It works, it just tends to chip out.