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Lets see if this can start some comments. I have been getting deeper into engraving the last year or so, I have a Magnagraver setup on a foredom flexshaft. It works okay, just a little stiff and awkward for tiny detail. And my handpiece was getting long in the tooth and probably due for a rebuild. Buying a GRS system is way out of my budget, a low end Lindsay classic is a stretch (someday....) Looking online there are some good videos by Shaun Hughes on making your own pneumatic hand engravers. Years ago I picked up a dental tool that was used to compress gold foil into cavities for fillings. It was a simple motor and reciprocal piston pump that pushed/pulled air thru a small tube to tap on the rear of a punch tip. Runs off of a sewing machine motor and foot pedal. I took that and made a handpiece from an automatic center punch, an old Dremel spindle and collet nut. I made a couple different handpiece with different weight pistols for heavy or light use. I bought some of Steve Lindsay's sharpening templates ( fantastic tools, highly recommended) started back engraving and forgot all about the Magnagraver. Yeah, they probably aren't up to professional quality, but I spent maybe $30 all told. I have engraved stainless, crs, titanium aluminium etc with better results than the flexshaft. Since then I've made up a couple of other setups using small air compressor pumps modified to push/pull air. I haven't done much wood carving with them, more fun to carve by hand with razor sharp tools. You can see some of my stuff on my intro page, greeting from the Pacific Northwest. I think I posted pics in too large of format, ill try to figure out how to fix it, and throw up some more. Speak up, yell at me, tell me I'm a fool for spending time making tools, whatever, just make some noise to keep this forum alive! I only just now found out about it. Jim