On Sat, 7 Nov 2009 21:09:19 +1100, you wrote: >Even a slot drill would probably leave tiny burrs on the through hole, >some roughness on the opposite cheek, and sharp edges on the tooth tips, >so perhaps such a pulley would chew up at least the first belt run on >it. > >Turning after drilling would eliminate the burrs, but what a racket it >would make! Now, would the semicircular tooth snag the sharp tooth edges >on entry and exit, I wonder?
Common for engineering tasks to make a noise? Even after turning the excess off to size you will need to de-burr the teeth. A few seconds on a wire wheel fixes that. I've pulleys made like that out there and running continually, they seem no more damaging to HTD belts than any other commercial pulley. Steve Blackmore -- ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
