Note also that smaller nozzles and longer nozzles leak less so string less. A friend of mine has an e3dv6 0.4mm nozzle that leaks much more than my 3dsolex 0.4mm nozzle for this reason. The "race" nozzles from 3dsolex have more internal geometry which means more surface area for the liquid filament to stick to which can reduce stringing (and ironically lower viscosity due to better heat transfer).
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gr5 2,234
Sorry I just skimmed and I'm only addressing stringing.
1) Lower temp helps stringing more than increased.
2) Slowing down helps even more because there is less pressure in the nozzle
3) The most important is retraction. Your models appear to be quite small so the default retraction settings are probably way off. The key thing is:
retraction minimum travel (lower that maybe to 0?)
maximum retration count (raise that maybe to 100?)
Look at your part in layer view and turn on the checkbox to see "moves" in blue and note the dark blue versus light blue moves. One is a retracting move (light blue) and the other is non-retracting. You want to get rid of all the non-retracting moves between parts of your model.
Note however if you do too many retractions on the same exact spot of filament that you can grind it down to a point where you get a print failure (stops extruding). This is less likely at lower speeds (means lower pressure in nozzle which means lower stress on filament at feeder). But typically if the same spot of filament goes through the feeder back and forth more than 20 times it can cause a failure. But if printing slow 100 times should be okay.
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