I can say I have been using a Master Airscrew stripper for years. It works fine for me. I build everything from 1/4 scale to peanut scale and have been very happy with the stripper. I build with Dave Johnson sometimes and he uses a very sophisticated metal straight edge and an exacto knife with a number 11 blade. His stripps come out better than mine
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For precision stuff there is a "Ray Harlan" (sp?) strip cutter that the indoor guys swear by. I think peck polymers sells it now. Nice unit and not too expensive.
Cheers,
Dave