On Wed, Jun 29, 2016, at 11:26 AM, andy pugh wrote: > On 29 June 2016 at 16:16, Ralph Stirling <[email protected]> > wrote: > > Have any of you come across cheap collet spindles that > > have a through-bore? I am toying with an idea for a > > simple, special-purpose lathe, and need a hollow spindle. > > eBay is full of them. (well, not literally). > > http://www.ebay.co.uk/itm/301808141248 >
Note that that auction does not specify the diameter of the thru-hole. My experience with similar collet chucks is that the hole is smaller than you expect, often smaller than the clamping diameter of the matching collets. In my case I've got ER20 collets and bought some 3/4" straight shank collet chucks. ER20 collets will hold up to 13mm (1/2"), but the thru-hole in the shank is more like 3/8" (9mm). How big of a thru-hole do you need? -- John Kasunich [email protected] ------------------------------------------------------------------------------ Attend Shape: An AT&T Tech Expo July 15-16. Meet us at AT&T Park in San Francisco, CA to explore cutting-edge tech and listen to tech luminaries present their vision of the future. This family event has something for everyone, including kids. Get more information and register today. http://sdm.link/attshape _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
