On Sunday 03 July 2016 13:12:11 andy pugh wrote: > On 3 July 2016 at 17:05, Gene Heskett <[email protected]> wrote: > > Is there a std angle for this broached at an angle end of a boring > > bar? > > I doubt it. > > It is probably somewhere close to 45 degrees or 30 degrees, but I > doubt even the chap making it was particularly bothered about the > exact angle. > > I suspect that the angle will be too shallow to make it possible to > grind a tool that isn't undercut. > > Maybe keep the boring bar for boring and get something like > http://www.ebay.com/itm/141967673097 for threading?
Humm, Andy that shank doesn't fit the QC holder, needs a 3/4" shank. I have a smaller version of that, carries a 3 tooth chip on the end of the bar, but its only a 5/16 shank flatted shank. I'll check and see if I can mill a slot to carry it in a hunk of 3/4" cold roll I have. I did that once, in a piece of 5/8 to make a boring bar for the "Little Monster". Worked well in alu. Slot was a hammer fit that I watered down with superglue. I'll see if I can do that again. I made the first one a foot long so I could drop a sandbag over the long end to kill the chatter. Not perfect, but lots better. I'll cut this one 18" long, giving the sandbag a better chance to work. Thanks. 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> ------------------------------------------------------------------------------ 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
