Good morning, I’m having a problem with my H2D printer when printing with supports. I was printing with PA6-CF and used PA Support material. After my first print attempt with supports clogged the nozzles, I ordered 0.6mm nozzles from Amazon (since Bambu ones weren’t available in the shop) and restarted the print.
The nozzles are no longer clogged, but now I have a new issue. I’m experiencing a massive layer shift in the X-Y direction, approximately at the height where the support structure ends. Has anyone encountered this phenomenon? Does anyone have an idea how to solve it it? I’ve tried looking through all relevant forum posts but haven’t found anything comparable so far.
I’m going to respond (and bump) this thread as I have now had three of these shifts happen in the past 2 weeks. They are not as severe as OPs, but it’s still bad enough that I’m making a comment.
All 3 have been on relatively long prints, with one of them printing right now, that I’m going to just let finish.
I have zero idea what could possibly cause this. In the first photo, it only shifted on half the part, the other one shifted on the entire part. My parts definitely are not losing adhesion and moving, as that would cause other issues.
[Edit]: I’d like to note this ONLY happens with prints that have supports. I printed QTY2 custom size box drawers that were taller than the second failure, without supports, without any issues(and it looked excellent).
The second object I posted I printed before with great success, and a friend of mine has printed QTY20 of the other two pieces on his X1C from the same exact STL without a single error. On his, he isn’t using independent supports. He just strictly prints it in ABS.
I also haven’t had a single hiccup with this printer in 300 hours until this issue started
It happend again on my site. This time I printed petg. It was a modell taken from makersworld. I changed some parameters like ironing and precise z high and so on I dont know if this could have some influence.
Sorry, I’m a bit ahead of the dialogue. I was just wondering why it’s printing with this settings, because the filament might act very strange when the user apply inappropriate settings, it looks quite overextruded and over extrusion leads to layer shifts (it make build ups that would knock hard on the nozzle, causing layer shifts). For PETG, bed temp at 90C and nozzle temp at 255C is not impossible, but quite rare. 90C of bed temp might really cause issues. Also the part shown here looks like the cause of issues:
Did you happen to pull a file that was printed in ABS or a higher temp filament, and then just change it last minute. Something looks way out. Did the file think you had abs, and you had an off-brand petG in the slot that doesn’t have RFID tag?
I have the same problem. The piece weighs one complete roll (PPGF), and i guess it was a collision, pity there is no timelapse. But is should recover from missed steps, which it does not, since no closed loop motors.
It’s not a good idea. If you have a lost step it means youre going through some restriction. Either the model is bumping on the nozzle, or nozzle is having some clumps. Forcing it through would simply damage things.
Hi,
Indeed, you are probably right. It was due to the fact I did not build a wipe tower: filament slowly buildsup on a side of the nozzle, at one time that fell off, so we lost step when it bumped into the fallen off lump.
The closed loop motors would resolve this, but indeed there is a slight chance of damaging other things. Anyway, I looked into it and it is simply impossible.
closed loops have different drivers and one would need the dir+ dir- pulse+ pulse - and EN pins, which are simply not on the motherboard. Bambu Lab keeps the firmware closed an protected from tampering. Which a good thing for normal consumers.
It is a wonderfull printer, and I only had this issue once, so indeed, own fault
I’m having the same problem. Printing ASA with Bambu Support for ABS. Such a massive layer shift I assume it must be related to a collision – the same shift is apparent on the prime tower.
I didn’t see a resolution to the OP so hoping there’s something available to close the loop. Thanks!
I too have an issue with my HD2 over the past week I’m trying to remember if I updated the software. I’m getting the shift. Run out of black filament next roll and the shift occurs. More often than not if I put pauses in a test block about 3/16 of an inch up and put a pause I get a shift but everything after that is fine. I really hate to not incorporate a base that I’m going to trash on a model cuz it shifts I haven’t gotten answers yet. I have a suspicion with the docking Bay as everything else is free and unobstructed. If I push the docking tray back and load it to the right it gives us a lot of feedback he doesn’t want to move. To the left is very smooth. I’ve been trying to watch if that’s knocking it out of alignment because I’ve adjusted the belts and done all the things you’re supposed to.
