Plexiglas does get flame polished - I have done it in school. 1/4" thick glass bead finish 8" circle. Something of a plastic window that wasn't clear. Often the circles would have a melted spot - the touch between limp and char is on a fast angle IIRC - rapid change and a quick eye to extract in time.
I think polish - slow and cool is the best way. Martin Martin H. Eastburn @ home at Lions' Lair with our computer lionslair at consolidated dot net NRA LOH & Endowment Member NRA Second Amendment Task Force Charter Founder IHMSA and NRA Metallic Silhouette maker & member
mike1942f wrote: