add a temporary offset

I need to shift my z axis up by 7mm half way through a gcode file.

Can't find the particular gcode to do this despite hours of searching.

I tried g54 but it didn't seem to do anything.

TIA

G54 is to select a coordinate system not change an offset. Having said that you could touch off your Z in G55 at the different position and switch to G55 until you wish to switch back.

John

steeley wrote:

I need to shift my z axis up by 7mm half way through a gcode file.

G92?

Thanks for the pointer folks-Looks like I've got a solution.