Lathe backtool dont work.

Hello,

If I want use Back tool  X+ dont change to X -.
 
 

Here is X +- changed:
linuxcnc.org/docs/2.8/html/gui/gmoccapy....occapy:lathe-section

Is it bug or I use Gmoccapy bad?

I have newest version LCNC 2.8.2

The buttons will not change on the fly.
If you want to use a back tool lathe, you need to set your INI file accordingly.

• LATHE = 1
• BACK_TOOL_LATHE = 1
  
  Norbert

What is the philosophy of working on a lathe that has a front and a back tool?

When I want to make a shaft diameter of 40 mm.

front tool G1 X40
back tool G1 X-40

?

I'm not a machine operator.