On 02/11/17 17:15, Andy Pugh wrote: > >> On 10 Feb 2017, at 22:42, Jim Craig <jimcraig5...@windstream.net> wrote: >> >> Seriously though, lasers are expensive. I actually considered lasers >> first and went back to a regular spindle. > Also, going back to something else mentioned here, ECM might work. It might > be especially effective if the geometry allows several holes to be made at > the same time. true, less burr also less volts, more amps kind of like de-plating use carbide tube ( you can get a round hole by rotating or using carbide tubes ---old skool rule ) a jig plate could do several at once. so the precision can be quite high still requires gap-width controller tomp
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