Re: [Emc-users] Question on mechanical dial accuracy

2017-09-09 Thread Gene Heskett
On Saturday 09 September 2017 20:21:02 andy pugh wrote: > On 9 September 2017 at 08:50, Gene Heskett wrote: > > So I am still puzzled by dialing in a -0.0500" cut, and only getting > > a .0324" radius change. > > My experience is that lathes are just like that. Some tools cut the > same at any c

Re: [Emc-users] Question on mechanical dial accuracy

2017-09-09 Thread andy pugh
On 9 September 2017 at 08:50, Gene Heskett wrote: > So I am still puzzled by dialing in a -0.0500" cut, and only getting > a .0324" radius change. My experience is that lathes are just like that. Some tools cut the same at any chip load, some cut extra with a bigger cut, some cut less with a big

Re: [Emc-users] Question on mechanical dial accuracy

2017-09-09 Thread Jon Elson
On 09/09/2017 03:08 AM, Gene Heskett wrote: On TLM, expected Erik, but I got rid of the majority of that by putting tapered gibs in it and ditching the compound. Easily 10 times stiffer now, but they need re-adjustment frequently FWIW. But this isn't TLM, its the 11x36 Sheldon, 1500 lbs of wel

Re: [Emc-users] Question on mechanical dial accuracy

2017-09-09 Thread Gene Heskett
On Saturday 09 September 2017 03:20:44 Erik Christiansen wrote: > On 09.09.17 02:55, Gene Heskett wrote: > > I am gradually learning how to grind HSS tooling, which is usually > > sharper than a fresh carbide tool insert. That generally negates a > > spring pass need after the 2nd one. > > That h

Re: [Emc-users] Question on mechanical dial accuracy

2017-09-09 Thread Gene Heskett
On Friday 08 September 2017 16:13:20 Gene Heskett wrote: > On Friday 08 September 2017 15:32:59 John Kasunich wrote: [...] > Which is essentially what I did. And got the wrong size. :( In the > right direction so it was eventually correctable to a fit given the > rust on the shaft as it was outdo

Re: [Emc-users] Question on mechanical dial accuracy

2017-09-09 Thread Erik Christiansen
On 09.09.17 02:55, Gene Heskett wrote: > I am gradually learning how to grind HSS tooling, which is usually > sharper than a fresh carbide tool insert. That generally negates a > spring pass need after the 2nd one. That helps, but if it's enough, then winding the cross-slide against no more loa