You could mill a 10mm wide x 5mm deep slot in two rectangular bars, then silver-braze them together. Might not be strong enough, depends on if the OD is big enough to leave a reasonable joint area. Welding would probably leave a hardened zone and be miserable to machine afterwards.
John On Mon, Mar 20, 2017, at 09:58 AM, andy pugh wrote: > I want to make some D1-4 cams for a 4th-axis project. > These need a 10mm square hole (but 3/8 would be fine too). > I don't think I can polygon-bore a square, it needs too much > tool-relief. (I guess I should try, though). > > If I could find something like a 3/8" drive socket with no hole in it > that would be a good starting point. Any ideas? > > I have thought of having a hex hole and starting from an M24 grub > screw (setscrew). But those cost about the same as an actual cam. > (though the only source of cams I have found in the UK have no stock, > or I would have bought them). > http://spares.xyzmachinetools.com/XYZ-TRAINER-1330-1340/products/29/ > lists zero stock at £7.77 > > > -- > atp > "A motorcycle is a bicycle with a pandemonium attachment and is > designed for the especial use of mechanical geniuses, daredevils and > lunatics." > — George Fitch, Atlanta Constitution Newspaper, 1916 > > ------------------------------------------------------------------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users -- John Kasunich jmkasun...@fastmail.fm ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
