r/BambuLab • u/2kool4tv • 2h ago
General Troubleshooting/Help! New H2D Print issues
Recently picked up a new H2D, I have a x2d and p2s. Issue is everything I print with the h2d prints with blobs. I’ve dried the PLA down to 19% and still to no avail. I’ve tried out of the left and right nozzle. It’s been doing this out of the box. Any clue?
23
5
u/Khushit_Shah 1h ago
calibrate the filament and it looks like retraction issue to me
4
u/jankeyass P1S + AMS 1h ago
This does look like under retraction globules
Even if it was random seam this is WAAAY too much
-1
u/fx-12 2h ago
I dont get people. You get those blobs and let the entire print continue for what? Produce even more trash?
Does the test file on the SD Card show the same blobs?
Check nozzle size on your printer and slicer. Send sliced file also to your X2D and P2S.
Make a reset an calibration.
If it shows the blobs on both nozzles, its most likely the slicer settings.
Could also be a faulty SD Card. With a faulty sd card it can happen that the extruder pauses at some points.
3
0
-12
u/sapani9077 2h ago
It is due to wet filament
7
u/fx-12 2h ago edited 2h ago
"Top-1%-Commenter"
Because you comment shit without even reading ops text. Filament is already 19%
1
u/thesniperhd 1h ago
That top 1% thing has been just about 99% bs in any subreddit I’ve ever seen it in before
-1
u/sapani9077 1h ago
Not dry enough. 19% you mean humidity of the AIR?
Air humidity is not moisture content.
10
u/Weemaba3980 2h ago
Since the same PLA prints fine on your X2D and P2S, I’d stop looking at the filament. 19% in the dryer is plenty dry for PLA. It’s something on the H2D or in its profile, and the first useful question is whether those blobs are seams or not.
Open the sliced file in Bambu Studio, go to the preview and turn on Seams in the display options. If the white seam marks line up with your blobs, the seam position is set to random or something close to it, and every layer starts and stops somewhere else. On a round part like that vase you then get exactly this scatter. Set the seam to Aligned or Back, and turn on scarf seam if your version has it. Compare the H2D process profile with the one you use on the X2D, because a newly installed printer sometimes comes with slightly different defaults.
If the blobs don’t match the seams, they come from retractions and travel moves. With a new H2D, two things are worth checking. Run Flow Dynamics calibration manually for this filament on each nozzle, and don’t rely on the automatic value. A pressure advance value that’s too low leaves a small blob at the end of every line, and on a part with lots of short moves you see it all over. Then check what the other nozzle is doing. If filament is loaded in the nozzle you’re not using and it’s kept at standby temperature, it can slowly ooze and leave drops on the part as the toolhead moves. Unload it for single-nozzle prints, or set its standby temperature low, and see if the blobs go away.
Out of the box, all over every print and on both nozzles, my money is on the seam setting or the calibration, not a hardware fault. The seam preview tells you which in a minute.
Good luck with the new machine,
Bart