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Z height changes before combing and new layer


lancebaa
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Posted · Z height changes before combing and new layer

This is actually two issues...

 

the main problem I have is that right before a layer change, and before combing to the new location, the Z height changes. This makes combing useless, as there is nothing to comb against, so the result is stringing. Z-hop is disabled. It doesn't matter which combing mode I choose--the result is always the same.

 

Previous layer's infill finishes; Z goes up; it "combs" to the start of the next layer; next layer's wall begins printing.

 

What I expect: Previous layer's infill finishes; comb to start of next layer; Z goes up; next layer's wall begins printing.

 

Now, the second issue is that the Preview *shows* exactly what I would expect. But when I save it and then open the gcode file, it shows the combing/travel happening after the height change (and this is what actually happens during the print).

 

Attached are the "preview" after slicing (the one where the nozzle is level with the drawn line) and what it looks like when I open the same gcode file directly (nozzle already raised to new layer height). Both are the same layer. Both are at the very *end* of the layer.

 

Also attached is the 3mf file. Please let me know if I did it right.

Screenshot from 2020-05-25 11-49-50.png

Screenshot from 2020-05-25 11-48-06.png

CFFFP_v2_HO_28_18_deg_NEW4.3mf

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