A local shop uses the larger version of these to deburr holes drilled in tubing. They claim to be usable in 0.040 holes and there is a Swiss company that I can't recall the name of that makes really small ones.
http://www.ezburr.com/products/micro_series.php > -----Original Message----- > From: dave [mailto:[email protected]] > Sent: Saturday, February 11, 2017 3:14 PM > To: Enhanced Machine Controller (EMC) > Subject: Re: [Emc-users] EDM Small Hole Drilling > > ECM can be good stuff but often slow. LOTS of current at low voltage. > NaCl or NaOH as electrolyte. Byproducts may not be soluble and therefore a > mess especially if you make ferric hydroxide; a mess to filter. I thought about > doing this in salt water. That is use water out of the bay. Not an option for very > many users. > ECM is slow because it is electrochemistry. One equivalent wt of > metal/coulomb. > > On another tack. Drill with carbide and then deburr by electropolishing. > I've also seen some spring loaded tooling that will deburr both sides of a hole. > > Some things are simply not easy unless you have unlimited $$$ to throw at the > problem. > > Dave > > On 02/11/2017 02:35 AM, TJoseph Powderly wrote: > > > > On 02/11/17 17:15, Andy Pugh wrote: > >>> On 10 Feb 2017, at 22:42, Jim Craig <[email protected]> > 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 > > > >> --------------------------------------------------------------------- > >> --------- Check out the vibrant tech community on one of the world's > >> most engaging tech sites, SlashDot.org! http://sdm.link/slashdot > >> _______________________________________________ > >> Emc-users mailing list > >> [email protected] > >> https://lists.sourceforge.net/lists/listinfo/emc-users > > > > ---------------------------------------------------------------------- > > -------- Check out the vibrant tech community on one of the world's > > most engaging tech sites, SlashDot.org! http://sdm.link/slashdot > > _______________________________________________ > > Emc-users mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > ---------------------------------------------------------------------------- -- > Check out the vibrant tech community on one of the world's most engaging > tech sites, SlashDot.org! http://sdm.link/slashdot > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, SlashDot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
