Quote Originally Posted by Kevin Groenke View Post
We've cut it in 1 pass w/60W X-660. Cut's quick and easy, Polypro is less stinky than acrylic and contains no polyvinyls, so it's no problem. I don't recall settings, but we cut most stuff at 100%P and the fastest possible speed. There may have been trailing flare-ups, but no sustained ignition - Don't walk away.
Polyvinyl isn't a problem, it's the "Chloride" that causes HCL liberation, PolyVinyl Acetate for example is fine to cut with a laser