On 10 Oct 2014, at 14:25, Viesturs Lācis wrote:

> 2014-10-10 16:18 GMT+03:00 Dave Cole <linuxcncro...@gmail.com>:
>> I'm sure I am not the only one doing this, so how do others start over
>> after a program stop when a g92 offset has been used?
> 
> So far I always taught my customers to use G54, I actually never
> thought about using G92 for setting origin of part coordinates.
> Is there any reason not to use G54 or whatever part coordinate
> systems? That is exactly what they are meant for,

My understand is that while G54 etc are used to set individual co-ordinate 
systems, G92 is a global offset. It can be quite useful.
It can also be useful when you run out of G54-style offsets, although a bit 
tricky to keep track of where the CP is. 

Marcus

> they are easy to set
> with touch-off (there is keyboard shortcut) and can be set with G10
> L20 command as well from MDI or g-code file.
> 
> Viesturs
> 
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