You can buy cheap cbn inserts from aliexpress to that work fine for hardened steel
On Thu, 7 Apr 2022, 07:22 Sam Sokolik, <samco...@gmail.com> wrote: > The cross slide has around 17 inches of travel... Crazy.. > > https://photos.app.goo.gl/Z4NKdazgTGVAkPtD8 > https://photos.app.goo.gl/hjk4Wb4kbZAjTnRZ9 > > sam > > > > > > On Thu, Mar 24, 2022 at 6:53 AM Stuart Stevenson <stus...@gmail.com> > wrote: > > > The only thing I would add to Andy's comments about machining hard steel > > with carbide is to get a green stone and remove the built up edge after > > every pass. Heat is what kills the cutter. > > > > On Mon, Mar 21, 2022 at 11:34 AM Leonardo Marsaglia < > ldmarsag...@gmail.com > > > > > wrote: > > > > > > > > > > I have machined a number of ballscrews. Typically I peel of the outer > > > > hardened layer with CBN-tipped tools, but mainly because I have some. > > > > It can be done with normal carbide, though you might need more than > > > > one. > > > > Very high surface speed and very light cuts is the way to go. > > > > > > > > https://youtu.be/SmuZXXP_hMY > > > > > > > > > Nice Andy! I have some sumitomo CBN inserts I purchased from ebay a > while > > > back because they were really cheap but never used it because I'm > always > > > lacking the tool holder... > > > > > > El lun, 21 mar 2022 a las 12:54, andy pugh (<bodge...@gmail.com>) > > > escribió: > > > > > > > On Mon, 21 Mar 2022 at 13:53, Leonardo Marsaglia < > > ldmarsag...@gmail.com> > > > > wrote: > > > > > > > > > > Sam, have you had to soften the final portion of the ballscrew to > > > machine > > > > > that thread? I've never done it and the ones I'm mounting in the > > router > > > > are > > > > > fixed (rotating nut). > > > > > > > > I have machined a number of ballscrews. Typically I peel of the outer > > > > hardened layer with CBN-tipped tools, but mainly because I have some. > > > > It can be done with normal carbide, though you might need more than > > > > one. > > > > Very high surface speed and very light cuts is the way to go. > > > > > > > > https://youtu.be/SmuZXXP_hMY > > > > > > > > -- > > > > 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, 1912 > > > > > > > > > > > > _______________________________________________ > > > > Emc-users mailing list > > > > Emc-users@lists.sourceforge.net > > > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > > > > > > _______________________________________________ > > > Emc-users mailing list > > > Emc-users@lists.sourceforge.net > > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > > > > > -- > > Addressee is the intended audience. > > If you are not the addressee then my consent is not given for you to read > > this email furthermore it is my wish you would close this without saving > or > > reading, and cease and desist from saving or opening my private > > correspondence. > > Thank you for honoring my wish. > > > > _______________________________________________ > > Emc-users mailing list > > Emc-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
