Crappy first layer adhesion after adding MMU3
I recently added the MMU3 upgrade to my Mk3s+. The installation went smoothly, and I've completed a few successful prints. However, I'm having one heck of a time with first-layer adhesion.
I've gone through the first layer calibration process numerous times and swapped build plates (going as far as using a brand new plate) despite them all being clean. For whatever reason, even smaller prints tend to lift or accumulate buildup, resulting in either
A: A head crash
B: Prints curling
C: complete detachment from the build plate
The printer I modded has been my most print-worthy Mk3 pre-upgrade, and layer adhesion was rarely an issue. I did upgrade to a revo alongside the Mk3.3s+ upgrade from a while ago. I feel like I'm going crazy here. This printer has logged ~140 days of print time, and I've run my print farm that's had up to 30 units printing simultaneously. Despite my level of experience, I can't find any posts where others have had the same experience I have, so this has to be a "me" thing.
Perhaps the machine's BP/nozzle temps need to be readjusted(?) Possibly running cooler than anticipated. With that said, I'm hoping someone might have some more suggestions I might try.
I want, NEED my baby printing beautifully again. Any input would be greatly appreciated.
Thanks!
RE: Crappy first layer adhesion after adding MMU3
Update: apparently, raising the previously working temperatures from 23o to 248 for PETG seems to have done the trick. This feels like a drastic change, which is why my prints were failing so hard.
RE: Crappy first layer adhesion after adding MMU3
Guessing that you added a hardened nozzle that needs higher temps?
RE: Crappy first layer adhesion after adding MMU3
Nope. I did upgrade to a Revo 6, but it's using the standard (not high-flow) nozzles. The thing is, I was printing with the same hotend before adding the MMU3.