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PVA is very sensitive to any kind of dirt or grease/oil on the glass bed, like fingerprints. Make sure that it is properly cleaned before you start your print. You have various methods to clean it: soap and sponge or Karcher's windows cleaner (the yellow one) works the best in my case.
The big blob of PVA at the start is also a known problem, if it's too bad, there's an option to disable it entirely in CURA. I'd suggest replacing it with a brim, both can serve the same function ie prime your extruder and make sure that material is flowing through before the printing really starts.
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Brulti 176
PVA is very sensitive to any kind of dirt or grease/oil on the glass bed, like fingerprints. Make sure that it is properly cleaned before you start your print. You have various methods to clean it: soap and sponge or Karcher's windows cleaner (the yellow one) works the best in my case.
The big blob of PVA at the start is also a known problem, if it's too bad, there's an option to disable it entirely in CURA. I'd suggest replacing it with a brim, both can serve the same function ie prime your extruder and make sure that material is flowing through before the printing really starts.
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