Why do my prints have warts??
Printing on a newly upgraded MK4S with MMU3. Newly as in several weeks. Was running a 3S for a few months prior to that. I have only been printing for maybe 4 months now so I have much to learn. I appreciate these forums as I have already learned a lot.
I mostly print in PETG and I live in a fairly dry climate (Boise) so moisture has not been a worry for me thus far. However, that being said, we have had some foggy winter days as of late and I have noticed that some of my prints have turned out with leprosy or warts or whatever you want to call them. You will see on the temperature tower picture they seem to be happening consistently at all those termperatures. My theory is that my filament has absorbed enough moisture now that as it's moving thru the hot end it's forming little tiny pockets of steam that "pop" when released from the nozzle, thus causing these lumps and bumps. This is Overture light grey and it seems to be the worst offender. Printed some Overture yellow today in the PETG-TPU test (you see in the bumblebee bullet at the bottom) and all went well there. No bumpies in the yellow but I do see them in the TPU which have read is also fairly thirsty. Would you agree that these bumps are a result of wet filament? Does moisture cause such things?
