On 3 May 2014 01:43, Gene Heskett <[email protected]> wrote: >> (Turning with CBN tips is closest to single-point grinding, if the >> material isn't red hot and fizzing, you need more spindle speed). > > Much of my tooling is indexable carbide inserts, so I'm fairly familiar > with red hot swarf, and they do cut better at the higher temps, but that > does not sound like CBN. Define?
Cubic Boron Nitride, it tends to come as an insert in the insert: http://www.ebay.com/itm/371055717060 for example has one darker tip. I doubt you have seen red hot swarf quite like this: https://www.youtube.com/watch?v=BU14tfjUfQU Interestingly this video shows the same problem I have had, you need to have more back-out than normal or the tool drags on the return. Unless you have a very stiff machine then there will be more flex than normal, but that doesn't mean you can't hit size. The last screw I cut was on the Colchester Student at the Motor Club, and it was a revelation. > Also, these screws do not have countersinks in the ends, so I can't put it > between centers so I can hog it and stay at dimension. You can probably add one, the middles are normally quite soft. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto ------------------------------------------------------------------------------ "Accelerate Dev Cycles with Automated Cross-Browser Testing - For FREE Instantly run your Selenium tests across 300+ browser/OS combos. Get unparalleled scalability from the best Selenium testing platform available. Simple to use. Nothing to install. Get started now for free." http://p.sf.net/sfu/SauceLabs _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
