LeoGehrman

Hey, thanks for the reply. There does not seem to be any pieces loose or coming apart. The error shown in that photo is directly after we installed the Ultimaker 2+ upgrade, where everything would have been assembled by Ultimaker, not us. The problem doesn't seem like it is specifically with the glass beds, because we haven't really had any issues with build plate adhesion or corners lifting up, as we also wash the buildplates (not as frequent as once per month though). We will try cutting the bowden tube down 1mm, and returning back with results, but I'm sorry I don't a have a picture right now to show. It was very odd because the bowden tube popped out on the backside of the printer, where it comes out of the feeder. Does taking the bowden tube out frequently also wear on the tube's ends? I mean carefully removing the collet like normal, not forcing it out. I also calculated that with our normal setting we are printing at about 10 cubic mm/sec! (with a 0.4 nozzle). I wonder if we just tried to speed up the printers far too much.. I will get back to you about the bowden tube, but I am still not sure how the head overflowed like that. Maybe it was also a result of our high print speed? Thanks so much!

My school has 15 UM2 printers that have since 2015, and have been mostly printing continuously during the fall and spring semesters. Over time, they have become very difficult to fix, often clogging after every single print. We have bought new nozzles, Teflon couplers, and have maintained them well over the years but they still have deteriorated very badly. In February of this year, we decided to buy 10 UM2+ upgrade kits to try and solve all of the problems. Since it included a new feeder, axles and entire head, we figured that it would basically change all of the parts which actually do the printing to be brand new, and refresh the entire printer. However, now that we are back at the university since the pandemic, we have found that they are having all kinds of troubles once again! Bowden tubes pop out mid print, clogging, and even overflowing (like the attached photo). Everything is brand new, so we have absolutely no idea what it could be that is causing problems. We followed the installation guide and everything fit great, but are running into the same problems as before almost immediately after installation. Could the air movement/temperature of the room ruin these printers? Could it be a manufacturing error on all of the upgrade kits? Even if not, is there any way to get a refund on these? Because they did not help at all...