My P1S has this problem where the nozzle does drop the stuck filament onto the purge line but ends up picking it up again while heading backward. Also at the start of the purge line there is this slightly bigger blob that the nozzle will get stuck on while starting the actual print. Now every time I…

Sounds like your filament needs calibration. Have you done so? Also, what filament brand are you using. If your using one of the pre-baked filament profiles, don’t trust them. Verify the calibration for yourself and then see how far apart the pre-baked settings were versus what you actually measured…

having same issue i cleaned that spot where line ends and it seems to stick a little better, seems like this started about 2 firmwares ago

[image] If you say “I don’t have the time,” you’ll face two issues. First, others will be less willing to help since you’re unwilling to do basic troubleshooting. Remember, you asked fellow 3D printing enthusiasts, not Bambu employees. We’re busy too, and Bambu does not read these forums. Second, …

I’ve found that time and material spent calibrating filament has always proved to be less than the time and material spent on failed prints. System presets for Bambu and generic filaments are sometimes acceptable. Calibrated filament presets have always been at least a little bit better. It’s just…

Okay. I got it. Now I’m using TPU 95A and observing some problems on the purge line as mentioned before. Now I just find TPU really sticky. Are hardened steel nozzles Bambu sells non-stick?

I have not had good results with Hardened Steel nozzles and TPU 95A. The problems are particularly noticeable when using HF TPU. When I swapped back to the Stainless steel nozzle, everything was perfect. In case my experience reflects on yours, do you have a stainless steel nozzle you can try to …

I use 0.4 stainless steel and I use Tinmorry TPU 95A.

These were printed in Tinmorry TPU 95 (not high flow) using a 0.4 stainless steel hot-end. [image] Flexible TPU Keyring by MalcTheOracle InformationAs an owner of keys, you realise there are times when you need to hang them up somewhere or hook things to them. This is the ideal solution…

this G-code modification solved it for me: [image] FIXED: prime line getting pulled into print Bambu Lab P1 Series Occasionally, my P1S would pull the prime line printed at the front of the plate into the print itself. It was random, and somewhat annoying, and would requir…

THANK YOU! Finally this issue is fixed. Whew.

Annoying purge line

Bambu Lab P Series Troubleshooting

SimEyeSee December 3, 2025, 11:05pm 14

Never mind, I remember we talked about it before and you showed some pictures of the difference.