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[machinist] EDM & drilling out broken drill - prep center drill to drill on outside
- From: Lawrence London <lfljvenaura@gmail.com>
- To: machinist@lists.ibiblio.org
- Subject: [machinist] EDM & drilling out broken drill - prep center drill to drill on outside
- Date: Fri, 29 Sep 2017 00:18:18 -0400
Brian Alan Whatcott It's slow alright - but goes through anything! heres a home built! https://www.youtube.com/watch?v=fRPmSgfIJqY
RemoveIn
this video, I demonstrate a Small Hole EDM constructed from a
bastardized solenoid type doorbell, a desk lamp and a 24v 1.8A electric
bicycle battery char...
Sterling N. Schmidt I
take the broken center drill, grind out the center of it so it cuts
around the broken piece, and slowly cut out the mistake. I use a cutoff
disk in a grinder to do the shaping. You have to sharpen the "flutes"
of the tapered part just on the very top. Takes a little doing, but
drills out broken bits pretty good without junking up your part.
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- [machinist] EDM & drilling out broken drill - prep center drill to drill on outside, Lawrence London, 09/29/2017
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