You can start out with the cheapest table you can find because you can take the motor and probably the mount to another level later when you mill the el cheapo into the ground. Backlash is not a problem as long as you have control over your toolpath. I build a 4th out of 2 inch thick al using a 1.5 ready made rod form McMasters and timkin bearings. I used a belt to drive it. I chose the rod because it had the right thread for the chuck I used. The chuck at the front and the pulley on the back together with a tiny stamped out shim stock disk provide the pressure to keep the assembly in the timkin bearings. Rock solid, no backlash, and good to swing an ox over the BBQ pit if need be 8))). Here's a picture. I bolted the drive right onto the 4th as the amount of AL is perfect for a heat sink haha. All self contained now. The tail stock has a MT3... just for size info. It's HUGE.
http://www.machsupport.com/forum/index.php/topic,11044.0.html Fudged turn table, fudged indexer, self build, all will work. Just do not expect to get great turn ratios with the machine shop based turn tables. My Self build one with the belt and stepper can run at least 400 rpm. Nice for many very shallow passes. I stabilized burl and am 'turning' that with the spindle and high 4th rpm's rather quickly. No way to do that by hand. best of luck! Rainer ------------------------------------------------------------------------------ Return on Information: Google Enterprise Search pays you back Get the facts. http://p.sf.net/sfu/google-dev2dev _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
