I was battling with a clogged nozzle on my delta, after a while I admitted defeat. Since I did not have a spare nozzle at had, I started mounting my E3D Super Volcano that I had laying around for the 1st time. After installation I started testing and encountered an issue that I cannot explain yet. Extruding using the 'Extrusion Control' tab in DWC works as one would expect. I can print the following file successfully: SingleLine.gcode . However, this is the only file I have been able to print. All others do not actually extrude anything, retracts do work. (an example of such a file: 20mmCube.gcode ) I think hotend/extruder problems can be eliminated as the symptoms are the same without filament loaded => no skipping problems. I can extrude manually => no blockage etc. Any ideas?

@Nxt-1 This would explain it. I would say that somewhere before you print, an M82 command gets sent - it may be in your config.g file or somewhere else. This will tell the firmware that extrusion commands are absolute rather than relative yet the slicer has used relative. So in your 20mm cube all those E0.7 extrusion moves will move the filament to a position of 0.7mm from where it started rather than by 0.7mm from the last move. Which will effectively give zero extrusion aftyer the first 0.7mm. But the SingleLine gcode file has a great big E69 command in it so it will seem to like it's extruding because of that one 69mm move. But I would think that after it's done that, the filament would then get retracted back again because the next move is E0.01677. Is that what happens? Try putting M83 in you slicer start gcode. This will "tell" the firmware that any following extruder moves are relative. I'm a bit surprised that KISSlicer Premium that are using doesn't do that automatically.

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No extrusion in some cases

Moved Solved

Duet Hardware and wiring

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Dougal1957 @Nxt-1
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@Nxt-1 I've been using kiss that long now I can't remember wether i did it myself or not but I think it did!
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