If you're trying to maximize quality I would go a little slower. There is evidence of some ringing on your sharp corners. 30mm or 40mm/s is going to help that.
Also lower the temperature as suggested.
Other filaments (Pure PLA instead of the PHA) may be less stringy, and can take lower temperatures. Finding US suppliers of PLA which have as good of colors as Colorfabb is tricky though...
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pm_dude 27
Hi,
Welcome to the forum! Thanks for posting the print settings you use.
Have you considered reducing the nozzle temp or playing with the retraction settings? Longer retraction should reduce strings and spikes in your print. I don't have an UM1 but I believe it should be able to print at lower temp.
Try printing 1 or 2 small cylinder of 20-30mm wide and 5mm height with 100% infill and your current settings. Try reducing the nozzle temp as much as you can without suffering under extrusion. At 30mm/s you should be able to reduce to about 190C.
The colder you print, the shorter retractions you will need.
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