The first time we had to fix our newer printer

We had been using our new printer for ten months when the filamentThis is the plastic which is used as a source for the printRead more stuck in it. In the middle of a print. It was a common problem with our old printer, but it has never happened to the new one. We were not especially worried at first, because it happened lots of times with the old printer. But it turned out it was not a hiccup, but something more serious.

We spent days trying to figure out what happened, but we are still not sure. We suspect the PEEK isolator doesn't isolate any more and that's a key part of the Budaschnozzle hotend we are using on this printer. We ordered a new isolator and a new hotendThis is where the plastic actually melted. It is part of the extruder which contains the pusher and the barrel as well. to be on the safe side. Much to our surprise the hotendThis is where the plastic actually melted. It is part of the extruder which contains the pusher and the barrel as well. arrived within three weeks (we are still waiting for the isolator), so we could start working on replacing the old hotendThis is where the plastic actually melted. It is part of the extruder which contains the pusher and the barrel as well. with the new one.

Even though we had a completely new and functional hotendThis is where the plastic actually melted. It is part of the extruder which contains the pusher and the barrel as well. in our hand, it didn't go that easy. We never had to play with this printer before, because it never had any problem before. So we were not familiar with the tricks to make it work. We had to learn it this time.

The first problem with it was that the filamentThis is the plastic which is used as a source for the printRead more stuck again. Not the same place as with the old hotendThis is where the plastic actually melted. It is part of the extruder which contains the pusher and the barrel as well. we just replaced, but the same way nonetheless. After some investigation we concluded that the PTFE tube resides in the core of the hotendThis is where the plastic actually melted. It is part of the extruder which contains the pusher and the barrel as well. was somehow a bit tighter than necessary and the filaments was unable to move in it easily. We drilled a right sized hole into it and put it together again, but it was still not right. It was not stuck, but the filamentThis is the plastic which is used as a source for the printRead more didn't go freely yet. This time the problem was with the alignment of the pusher and the hotendThis is where the plastic actually melted. It is part of the extruder which contains the pusher and the barrel as well. - they were not aligned perfectly, which made the filamentThis is the plastic which is used as a source for the printRead more moving harder then ideal.

Fixing the alignment helped with the filamentThis is the plastic which is used as a source for the printRead more moving, but a new problem came up. A very heavy leaking, which came as a surprise because we never experiences any leaking with this type of hotend. Not even a slightest one. After several tries we used PTFE tape on the nozzle which fixed the problem for now.

And just when everything seemed right another disaster came. It wasn't that obvious at first - the prints seemed to miss a few layers here and there. We knew something was seriously wrong, but didn't have a clue what it could've been. And it went from bad to worse. Sometimes it seemed the printed object was taller than how high was the head (which is impossible - the printer puts the layers on each other moving always up). And than we saw it: the screws for the left side Z axis has been loosened and the left Z axis didn't moved when it should have been. That was why the left side always looked worse and that was why it was better in the first few layer. And as frightening this issue was it was as easy to fix: tightening a few screws made the trick.

And that's it - we really hope after this fix the printer will be functional for another ten months and with our new experiments the next maintenance will go much easier.

And now, after about a month without a working printer we are back in business. We have plenty to print - and we will be back with more reports.