Massive retraction starting files back to back

[Bogative]

I think I saw someone post a similar issue but I could not find it. If I print a file and then immediately start another file right after it finishes it can be the same file or a different one, once everything reaches temp and it hit's the home switches there is a massive retraction issued basically empties the entire bowden tube.

Having to hit reset after each print is annoying. Is this a firmware issue a setting issue? Anyone else seen this or fixed it?

[dc42]

You are probably using absolute extruder coordinates, and your slicer is not resetting the extruder position at the start of a file. Adding G92 E0 to your slicer start script may fix it.

I don't understand why so many slicers default to using absolute extruder coordinates. Relative extruder coordinates make much more sense for 3D printing.

[Bogative]

Awesome I will add it to the script in Cura and see if it resolves the issue. Thanks!

[Bogative]

While adding it I think I identified the issue. I copied the post post process script from Matter controller

M104 S0 ; turn off temperature
G91
G1 Z5.0 E-3.5 F12000
G90
G28
M84 ; disable motors

Seems that 91 is probably my issue. They are setting it back to G90 though.