I made some experiments where the nozzle is swapped upside down so that gravity cannot pull out a string.

My theory is, that with retracting, some air gets inside the hotend which is caught by surrounding, sealing melt and warmed up then, pressurizing the melt again. Therefore my strategy would be a fast, short retract of about 1mm to remove printing pressure, followed by a very slow retract (for about 15-30sec with about 0.5mm/min and step-wise descending speed) after swapping to the experimental idle position, which should compensate expansion of trapped air or outgassing moisture/other fumes.

I already did some tests with a macro and it reduced the length of the emerging string significantly (about 3mm instead of >10mm) but still not 100% and therefore, I will do some further testing in the next few days.

@oliof said in Is my extruder set up properly?:

@fxstein somewhat offtopic nit-pick, but "direct drive" and "direct" are two different things. "Direct drive" usually means an ungeared extruder (while I am nit-picking, I'll nitpick on myself and mention that this should be "filament feeder", with the opposite being geared extruder (like Bondtech or Hemera). The "direct" versus "Bowden" (no drive) are really "short distance" vs "long distance" (between filament feeder and hotend).

I know exactly what you mean. We - no I am are butchering a bunch of terms. Guilty as charged. Having said so, the vast majority will understand the meaning of it - might even be less confused than when we speak more precisely.

So I tried the suggestions: first an Inside-out with increased speed:
2_1542123045862_IMG_1012.JPG
then one with outside in with increased speed
1_1542123045862_IMG_1014.JPG
at last, outside in with Z-hop off
0_1542123045861_IMG_1015.JPG

Looks the same to me.

@d0minik96 No there is no wipe function. Usually you'd be using pressure advance anyway and wipe/coast is not recommended when using pressure advance.