Try contacting bambu support about it. They had me prove it was happening with a video, and today they asked where they should send a new part to. Don’t know if it will help, but new parts are always good. Hopefully it works.
Well, I’ve been in contact with them for almost a month now, videos and photos included. I’ve been consistently putting to practice what they told me to, and based on their last response, they are stumped too.
I assume you also noticed what I did, is that by finding other people posting about this issue in various places. That when people fix it, and tell others the fix, it ends up working for some, but not others. Found many ‘fixes’ that are completely different. Recall switching to a new nozzle being another that worked sometimes.
Also recall a post about the belt tension being changed specially I think it was the Y axis, but I did them all. At one point when I did the Y-axis it got a lot better for my 1 layer test directly after doing it, then my next test was back to how bad it always was. So I did it again and no improvement again. Did all of them at once and no improvement. Few days go by, today I did just the Z axis tension, that seemed to improve a test yesterday, but still bad looking. About to try another print to see if it helped still.
Also I messed with Z-offset to make the nozzle higher (with orca slicer setting), each .01 higher looks a little better, till at one point it starts looking like underextrusion perhaps, and then when it gets way too much it turns to layer lines peeling apart when removing a first layer test. That seemed like a good hack perhaps for it to work much better with PLA, (a few prints when I found the optimal, but still not perfect value came out quite good) but with PETG I still get the nozzle crashing into the print and knock off chunks all over the place. I have all the popular fixes for that such as using gyriod, having don’t cross walls on, zhop settings, disabled reduce infill retraction, but still getting completely unacceptable PETG printing. Wonder if people with the first layer issues are also getting the nozzle crashing into their prints? The z-offset increase on PETG while making the first layer look better seemed to have no change on that nozzle crashing issue.
Also saw one where replacing the extruder assembly worked to solve it.
I was thinking of telling them, If changing the extruder gears and extruder motor tomorrow doesnt solve the issue, that on the forums I found that the issue could be a defective hotend heating ass.y and ask them if they suggest I substitute that as well.
Also ask them about the warranty policies.
Clearly they using the warranty in sending us free parts. I was asking only because I couldn’t tell what you possibly needed to tell them based on what I said and was curious. I wonder though given they are sending you something different than me, if they see something slightly different in what we sent them that leads us being sent completely different parts. Or they just don’t know either and do something random.
When they send you parts, do you get an order placed email, or only an order shipped one, or what?
Ah no, they haven’t sent me anything with warranty yet, they wrote to me that they are still studying my case and trying to decide what to tell me, but in the meantime, having tried everything else, and having a Boatload of prints to do before my wedding, I bought a couple possible culprit-parts to sub myself.
So your issue was the hotend assembly?? I’m having first layer issues too.
I’ve been having these issues for about a month and I’ve re-calibrated it multiple times, I’ve upped the extrusion/flow rate, dried my filament for a full day, tightened the tool head bolts, and even ordered a new nozzle and have had no luck
Yeah for some reason the tightening didn’t work, but replacing it did. I’ve been looking for solutions for this for quite a while and bambu when I told them just sent me that part. But also seems that there are tons of different things that can cause this so was lucky it was that part and didn’t need to put in even more work testing other fixes.
That’s crazy. I’ve seen these threads a lot too and really makes me wonder if it’s even worth it to get another A1 if the same is going to happen to that one too. I was making plans for ordering a mini or a 2nd A1 but idk now
