[BUG] Z axes is going up after Unload filament is selected

[slackista]

Printer type - [Any] Printer firmware version - [I think from the beginning]

Yet another Load/Unload issue. After press unload filament Z axess is going up +50.

• Harder to unload when using enclosure. No benefit with/without enclosure.
• After following failed unloads extruder reaches its Z limit and still trying to going up. Impossible to fix clogged filament in enclosure.
• When last print finished eg at Z=170 after pressing Unload then is completely failure, motoros trying to going up, very fard to unload filament in enclosure most probably resulting clog.

To Reproduce Press "Unload filament" and wait until extruder is going +50

Expected behavior After pressing Unload only setpoint heat should be applied and that's it. I see no reason to move extruder up to unload filament.

[3d-gussner]

@slackista Thanks for the feedback. Lifting the Z axis while unload is to prevent the hot extruder staying close to the printed part and when filament is loaded also to be able to catch some oozing filament before moving back to the print. The "Unload filament" procedure is used multiple times to reduce the code size.

One solution could be to only lift the Z axis a bit or not at all when the printer is IDLE. This would cost some precious resources and I am not sure that this will be implemented. I will discuss that with the other developers.