Re: [CAD_CAM_EDM_DRO] Re: gcode comments

On Saturday 27 January 2001 22:03, you wrote:

> ballendo@... wrote:
> > Example: G20,G21 are COMMONLY used
> > nowadays for inch/mm programming. Used to be G70,G71. For now I think
> > we should be 'backward compatible to 70 and 71, BUT we should also
> > support 20 and 21... There are LOTS of other examples!
>
> It's G20, G21 in the EMC's interpreter. Should G70/71 be added?

sure but by what definition?
these are now commonly used on turning centers
G72 stock removal in facing
G71 stock removal in turning
G70 finishing cycle

they let you make several roughing passes leaving some stock
for the finish pass and then run a sooth continuous path finish
cut

the whole range of G7X has so many flavors that trying to enforce
any "Standards" on them would be like herding cats ;-)

Brian