Tool deselect macro?

[geneb]

I know there's macros available for selecting tools (tpre0.g, etc), but is there a macro that will execute when a tool is de-selected?

I'm working with dual extrusion on a Rostock MAX v3.2 and it uses the same dual extrusion system as the v3 - essentially a "Y" splitter that feeds one of two filaments into a single hot end.

In order to change filament, the existing filament has to be pulled back past the splitter so that the new filament can be loaded into the hot end.

I can easily load the filament using the tpostN.g files, but I don't see a place where I can add the retraction step.

Thanks!

g.

[Jackal]

https://duet3d.dozuki.com/Wiki/Gcode#Section_T_Select_Tool
Is tfreeN.g what you need?

[geneb]

Thanks! I must have missed that the first time I surfed that page.

g.