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Plastic can be frosted with solvents. In the case of perspex ether is a solvent. But I think there are still drawing pens by Rotring and other makers which are of specially formulated, expensive...

Well first, I've found it works on the British perspex as formulated many years ago. I believe US plexiglas is very similar, but it might be worth trying on scraps. I don't believe it sinks into the...

jeweller's rouge will do a pretty good job of polishing plastic, but the slow speed is a good idea, and if you can't run your equipment as slow as you would like, very light pressure is indicated. It...