On Friday 01 May 2015 10:08:13 andy pugh wrote: > On 1 May 2015 at 14:34, John Kasunich <jmkasun...@fastmail.fm> wrote: > > Making a poly-V belt pulley is simple lathe work. Making a timing > > belt pulley means cutting the teeth. Much more complicated. > > You just need to know the right people:
> https://www.youtube.com/watch?v=ltmZrDrt6pQ And have the right machine... I have a table for my mill, and a round bottom gully would be a piece of cake but would need entry and exit clearances I am not able to calculate. I'll pass on that. The encoder I'll install at the same time will give me the rotational accuracy for rigid threading. TBT, to do a toothed pulley I'd have to go spend 500$ on a better table to do that right. I would NOT trust this one for 1 degree accuracy, and certainly not for eccentricity as it has no MT tapered center hole at all. $100 4" from Grizzly with a made in india sticker on it. My putting a 425 oz motor on it doesn't help that. I'd need a 3" 4 jaw to adequately center the workpiece. It does a great job of sharpening bits at the correct angles against a diamond disk though. :) 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
