Hello,
With a prusa I3, I have serious retraction issues that I can't fix.
ABS 235° bed 90°, 4.5mm and 40mm/s retraction; 170 mm/s non printing moves, print 55mm/s and a working fan.
See photo.
And it's even worse with PLA and PETG.
I've not found the solution on forums.
Thanks!
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