On 1/5/2015 9:48 AM, Gene Heskett wrote: > My question is: Can these roundover bits actually plow where there is no > 'edge' since the edge would not exist at that time? Plow the double > sided groove, and then cut the piece out of the sheet. With 2" wide > stock, if I cut them out first, then round the edges, I can get 6 pieces > out of 2" but have a heck of a time holding them while doing the > roundover, but if I do the roundover first, I can only get 5. Even so, I > think I cn get the 50 I need from one 1/4" thick, 2" wide, 12" long > sheet. > > Has anyone a better idea?
Got a scroll saw? A real one with pivoting upper and lower arms, not the type that pulls the blade down against a tension spring? If you have such or know someone who does, get a fine fretwork blade for it. Use the CNC mill with a very small end mill or engraving bit to mark out the circles nested as tight as you can cut between on the scroll saw. Next step, use a lathe. Flat ended rod in the chuck, glue on some sandpaper. Flat nose ball bearing center in the tailstock to press the buttons against the rod. Simultaneously cut to diameter and round over with a form tool or use CNC to cut the round and size to diameter. If you really wanna use the mill for rounding, use the lathe just for diameter sizing then build a vacuum holding fixture from MDF. Build it like a table for vacuum forming but with a pocket for the button and holes in the bottom of the pocket. Making a *lot* of these? How about having the button blanks water jet cut? --- This email has been checked for viruses by Avast antivirus software. http://www.avast.com ------------------------------------------------------------------------------ Dive into the World of Parallel Programming! The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
