On Sunday 16 July 2017 03:26:45 Peter Blodow wrote: > Gene, > learning from the experience from machining in our shop, I made my > (own private) steady rest with small ball bearings right from the > beginning (and also the moving rest which can be bolted to the > carriage). They also cause some minor traces on the workpieces, but > these can be polished away. > Peter > I'd considered that in a past effort, Peter. So I made one set for TLM, didn't have adequate swarf control and it mashed the swarf that hit it into the workpiece. Looked like a pop art version of a knurling tool where it rode the piece of cold roll I was working on. Appearance wise, I think the best description was fugly?
Then the experiment ended a little pre-mature as the bearings were salvaged from used Sony BVU-800 capstan rollers, and the outer races broke, too thin and the balls too big, too big a gap between contacts left the outer race inadequately supported. Rings to drive them into, re-enforcing the outer race might have worked better but weren't tried. These were something in the 8mm OD range, teeny little things. Very low rolling resistance, new or used. Normal loading was perhaps 20 lbs, split between 2 bearings. The rubber wore out, or swelled up from leaking lube, long before those bearings had any wear, and I always took the old pinch roller assemblies home. Terminal case of packrat-itis, and haven't found a cure yet. :) Even worse, I married one 28 years ago this December. :) Thank you, Peter. You are healthy and doing well I hope. Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ 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
