I wanted to share my experiences with the H2D with you all. In the meantime, I’ve completed several prints and, to sum it up, it’s been a catastrophe. A series of error messages appears that aren’t addressed in the error descriptions (see image).
The prints with supports—whether for PLA/PETG or PVA—fail because the supports don’t adhere to the structure, or they get dragged along by the print head, leading to the print being aborted (see image).
Additionally, the layers don’t align properly and the print quality is far behind what I achieve with my P1S. I’m also seeing “pimple effects” on the prints (see image).
I work exclusively with filament from Bambu Lab, and I’m convinced that the print settings are just off. All in all, instead of having a reliable machine, I now have an unwanted new hobby. What do you think?
When you say they don’t adhere to the structure, do you mean the support doesn’t adhere to itself? For example is that first photo all support or a mixture of support and model material?
Its not a rule, its just a good way to save support filament and speed up the print. Its not always ideal though as with some supports with a small interface layer you can have a print fail. Also with materials like PA/ASA its cheaper to do all ASA supports, but it will be slower.
The support does not adhere to the model material that serves as the support structure. Only the separation layers are printed in the support material.
I have tried it with both, pva and support for pla/petg gen1.
Both are not working @h2d. With my p1S there is no trouble with the same model.
As I described I get permanently a failure message, but there is no comment with this hms.
I am quite frustrated.
I had a similar problem using PETG as a support interface with PLA—Nozzle clumping and the whole interface shifting or being knocked off the print. I seemed to have solved it by:
Run the high precision nozzle offset calibration
Next, run the regular calibration procedure
Increase the default nozzle temperature of the support material. I believe I increased my non high flow PETG to ~265C. I also slowed down support interface printing about 50% and put a default retraction height and z hop
it’s when the filament and the support need different bed temperatures, so you just print the interface in the support filament so you dont lose bed adhesion.
it also means much fewer material changes, which speed up the print
Hence I thougt the filament profils from Bambu Lab don’t fit to the new H2D.
I made a secound try with the same settings, and there was the known failure.
I think it would be importent that somone else with a H2D should try to print with PVA and see if they have the same problem as you. If they dont, your printer is foulty. If they have the same problem, it would be nice to let bambu lab know about it.
Edit:
I am going to try print PLA with PVA support, and PETG with PVA support when i get my printer.
But if you lookmin the thread “Has your H2D Shipped?”, you know i have a smal problem with the shipping.
Edit edit:
First impression if i look at all the other threats, i would say that your printer has a problem.
I’ve had the same issues with PVA and PLA on my H2D. If I bump up some of the temperatures it helps a little bit but it’s not a lot. When I print with it by itself it’s prints fine (Made a test PVA Only cube). I think part of the issue is before it starts printing on the tower or anything it oozes. I’m trying to play around to see if I can get it to wipe before it does anything. Funny part is the PLA does a wipe every time. I think it’s a retraction setting that I need to fix but I can’t figure out which one.
I don’t have my printer yet for testing, but you can try printing your PVA at a slower pace by setting the volumetric flow rate to 3.0. Also, are you using the generic PVA profile?
Hi,
I will give it a try after my current print job. As I said, that is not only a PVA topic. I have made a try with support for PETG, with a flow of 3 @ 250°C. the Petg was printed with a flow of 12mm³/s and a reduced temp of 265°C.
Here is the result:
