Thanks
I am using PLA + PVA for the support. I printed a model of a bone so it is complex internally. On my U2 I found that prints failed until I reduced the retraction.
The first print ever with the U3 failed 1/3 of the way through. I found the PLA filament ground most of the way through. I reset the retraction distance to 2 and the bone printed nicely - although it took 13 hours compared with 3 hours on the U2!
Thanks you advice
MM
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conny_g 251
My experience is that this depends on the material. With PLA the retraction is less critical as it doesn't ooze to much. There 4mm is enough. With nGen I need more than 5mm to get the retraction to help and reduce stringing.
For some materials more than 4mm is just not possible because the material is too soft and grinds in the feeder if you have more than 4mm or the retraction speed to high, Glowfill for example. Then you need to fight oozing with lower temperature and lower speed.
What material did you you use?
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