I can't get more than 4k rpms from either of my lathes and I have not had a stability problem at those speeds. I would have to do a little testing to see if I would go higher (if I had a machine that could do it). The size is easily adjusted. I cut mine on my cnc rotary table on my Millright. I could easily just make one continuous revolution and make the OD whatever I want. I wrote the code to make the notches at degree intervals so the machine doesn't care what diameter it is working to.
The plastic sure makes the machining process a breeze. I used a plywood backing and a large washer that covered most of the part of the disk that I wasn't machining. It was very stable and machined cleanly which it will not do if you don't clamp it down(ask me how I know). I use a relatively slow spindle speed and a windex spray bottle with H2O for coolant. The idea is to keep the tool and the plastic from getting hot enough to melt. Cecil Stuart said: >That would be large enough to have some physical instability at high speed. >You could also have room to put a number of pickups around it and gain >resolution by reading them sequentially. ------------------------------------------------------------------------------ Open source business process management suite built on Java and Eclipse Turn processes into business applications with Bonita BPM Community Edition Quickly connect people, data, and systems into organized workflows Winner of BOSSIE, CODIE, OW2 and Gartner awards http://p.sf.net/sfu/Bonitasoft _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
