On Monday 05 December 2016 05:04:11 andy pugh wrote: > On 5 December 2016 at 01:26, Gene Heskett <ghesk...@shentel.net> wrote: > > But couldn't find any of these I could afford, and had the angles > > needed to make polygroove pulley's. Project shelved. > > That's the time to grind a HSS tool. I doubt that you planned to make > 100s of pulleys in hardened steel. > Carbide is over-kill for most of the things that hobby users do.
HSS cutting alu is not a long lasting tool, although a safflower oil mist can extend the tool life, a lot. > > Not that hand-ground HSS tools make calculating tool angles easy, > though with tool grinder you would just be able to use the angle you > set it to. Have 2 std $40 bench grinders, no angle setter. Is also maddeningly slow at taking off enough to form a proper angle in a reasonable time w/o burning up the tool. No powered diamond wheels with coolant. Looking on ebay. the cheapest thing to click on for a better look is $500. One si carbide wheel, 2 alox & one wet grizzly grinder with 10" rouge wheel for plane blades, but even that doesn't have an accurate angle setter. I did make a huge sliding table for it so I could sharpen my 13" bench planer blades. That stone is a cuttin fool even if it is about 8000 grit. I should see if I could make a post and articulated swing mount for it. I am beginning to get the tools to do that. Thanks Andy. Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
