On Saturday 16 May 2015 16:19:53 Jon Elson wrote: > On 05/16/2015 09:11 AM, Gene Heskett wrote: > > On Saturday 16 May 2015 09:54:14 Jon Elson wrote: > >> On 05/16/2015 04:41 AM, Gene Heskett wrote: > >>> A hole that I presume is actually centered and can be used to > >>> register it? That would be a nice touch. ;-) > >> > >> I would not trust it! The powder sintered pulleys I got > >> were visibly out of center, > > > > I would be afraid of that, but visibly off, yee gods! > > I bought some R-8 end mill holders and could just see that > they looked odd when I took them out of the package. Turned > out to have .020" eccentricity! I had to send them back. > Apparently, a whole batch of them were made badly. > Got to check all tools when they come in. > > >> which didn't matter as I was > >> turning them on the lathe, holding the OD in rings in the chuck. > >> > >> Jon > > > > Precisely why I posted the snide remark, Jon. I should have added a > > frownie. :-( > > > > But I fear that my 4 jaw, independent, is not the chuck to use > > unless I want to trust the DRO, so I can mount the indicator on the > > cross slide, and back it out of the way of a passing jaw as I'm > > playing with the tensions for that final bit of eccentricity > > removal. That sort of thing needs a 6 jaw scroller, and they need a > > BIG red wagon load of rolled quarters to put a quality one on my > > property. :-( > > Yes, I bought a nice Phase-II adjustable 8" chuck on sale > quite some years ago, and had it on my 12" > Craftsman lathe. When I upgraded, I put it on my Sheldon > 15". It still holds parts to about .001" > TIR most of the time.
Now you are making me jealous. But it would probably take my rig ten seconds to get it up to 200 revs. > I rarely ever put the 4-jaw on the lathe. > > Jon I have it back together, and a tool for polygrooves sharpened, but my code is miss-behaving so I haven't made anything with grooves for polybelts yet. I put some cable chain on the X cableing while I was putting it back together. It might cut down on the "oops, I stretched too far" cable syndrome. ;) 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> ------------------------------------------------------------------------------ One dashboard for servers and applications across Physical-Virtual-Cloud Widest out-of-the-box monitoring support with 50+ applications Performance metrics, stats and reports that give you Actionable Insights Deep dive visibility with transaction tracing using APM Insight. http://ad.doubleclick.net/ddm/clk/290420510;117567292;y _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
