On Tuesday, March 15, 2011 10:27:07 AM andy pugh did opine: > On 15 March 2011 04:32, gene heskett <[email protected]> wrote: > > I knocked that elderly B&D apart tonight, far enough to see that it > > only needs the bearing on the chuck end of the shaft, but the collet > > is really a trashy collet, so if I follow that idea, I may as well > > start by making my own shaft to take a decent MT2 collet as I have > > those. > > Do what that chap Edward's link seems to have done, use an ER11 > extension spindle as your basis: > http://cgi.ebay.com/ER11-8MM-STRAIGHT-SHANK-CHUCK-CNC-MILLING-LATHE-D66- > /150573752140 or 16mm dia, but needing a snap-ring groove or something > http://cgi.ebay.com/New-C16-Er11-150L-Milling-Straight-Shank-Holder-US-/ > 110452460881 ER11 goes up to 17/64".
That last doesn't look too bad, I'll look closer if this die grinder idea doesn't pan out. Decent precision for carving wood in ER11 collets doesn't look to cost that much either. Thanks Andy. > Then use the water pipe as you originally intended, with some $5 > angular contact bearings to suit. (8mm and 20mm are easy, 16mm would > need sleeving up or machining down, as there are no 16mm ID angular > contact or taper-roller bearings. > > My hobbing axis uses the same idea, but with an ER32 holder and taper > roller bearings. For obviously heavier duty. OT question: In looking at milling machines in the grizzly catalog, I see some can rotate the tables as much as 45 degrees so that x motion is not perpendicular to y motion. Is this a thousand dollar feature that is actually useful, or just a sales gimmick? With cnc, that seems to be a non-feature to me because it can be done under gcode so much easier, and a return to square is always good because it was never actually moved. -- Cheers, Gene "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) <http://tinyurl.com/ddg5bz> <http://www.cantrip.org/gatto.html> We don't know who it was that discovered water, but we're pretty sure that it wasn't a fish. -- Marshall McLuhan ------------------------------------------------------------------------------ Colocation vs. Managed Hosting A question and answer guide to determining the best fit for your organization - today and in the future. http://p.sf.net/sfu/internap-sfd2d _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
