Didn't get around to foolling with the lathe yesterday but will today and will follow what you did in reply 14.
So from memory let me say a few things and make an ask out of my self...............
Clicking the Zero World X and Z buttons will remove any WORK offsets that were created or saved and resets the DRO's to zero.
So if you now move the axis the DRO's will change reflecting the movement. So wherever the tool is located within the travel limits
of the axis ( by tool I am refering to the controlled point which is the point of the tool which actualy cuts the material), x&z=0 is based on where you were at the time you clicked the Zero World buttons. If you move away from 0,0, stop somewhere,
click the Set Home X & Z buttons, you have just told Mach that this is a location away from 0,0 which is home relative to 0,0 and within the travel limits.
So we now have Z & X =0 defined, and also have a home location defined within the travel limits.
If you move the axis away from home, stop, and then click the Home All button, the axes will move back to where you set home.
G28 in the MDI ( do some reading on how G28 is used). You can use the Home x or z buttons for the individual axis to go back to home.
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So you have a bunch of tools which were setup based on a master tool, say T1, they a numbered on the tool holder so you can't mix them up . All the other tools are based on T1.That master tool is never used for cutting, thus no wear / the controlled point never changes. You use the master tool to setup the lathe.
So all you need to do is read section 4.5 of Appendix "F" in the Lazyturn Manual which can be found in Members Docs. You simply create a work offset
(IE;G54) THUS THE TOOL TABLE IS IS NOT AFECTED.
Hope I didn't confuse,
RICH