Has anyone been able to print with PVA successfully on the H2C dual extruder? I have been attempting to test print with dual extruder a white PLA Benchy with PVA supports to figure out the settings, however the PVA supports continue to fail after the second layer because it separates from the base …

Benchy_Bambu_PVA_TEST_FINAL_SUPPORTS.3mf (2.9 MB) Hi guys! Thank you all for your input! Just wanted to update and say that with the comments (and more research) I was able to determine: I didn’t have nearly enough desiccant, so I bought some renewable kind Drying the PVA with the desiccant insid…

Did you dry it before printing? I know PVA is very hygroscopic so wonder if thats the issue. I have 2 reels of this to try, and never see anyone using it so figured there must be a reason for it!

Hi, Yes I did dry it before using my AMS Pro 2. I have a bunch of packets of desiccants in there as well. When I was watching the first couple of layers I noticed that after the base layer was printed, the first layer of the support pattern would print, but not bond to the base layer. When the pri…

PVA is an absolute rat b*stard support material IMO, end of story. I’ve messed with it a bit and given up, it’s just too fickle for my patience. If you truly need dissolvable supports, HIPS is an option, but the solvent is a bit nasty and requires PPE. Otherwise, use your print material for suppor…

[image] user_346537977: Yes I did dry it before using my AMS Pro 2. I have a bunch of packets of desiccants in there as well. I have to wonder if loading desiccant in an active dryer is causing problems. It can help when the dryer is off by scavenging water but when the Pro 2 heats and drys, …

Absolutely correct - silica can hold up to 40% of it’s own weight in moisture, and it gives all that up easily when heated, so if you have 50 grams of saturated silica in there, turning on the dryer can release up to 20 grams of moisture into your dryer. A larger or more full roll of filament is not…

how much drying did you do in the AMS2? bambu lab calls for 12 hours at 85C which is higher than the AMS2 Pro can go [Screenshot 2026-06-26 at 5.02.42 PM] i picked up an AMS HT which goes to 85C for exactly this requirement of PVA

Some people have followed your path before. Maybe this threads has some helpful tips. [image] [GUIDE] Mecha's Comprehensive Guide to PVA Supports for the H2D Bambu Lab H2 Series Mecha’s Comprehensive Guide to PVA Supports for the H2D Updated: 7/21/2025 Hello…

PVA Supports Failing First Layer

Bambu Lab H2 Series Bambu Lab H2C

Gerrit June 26, 2026, 9:46pm 9

Some people have followed your path before.

Maybe this threads has some helpful tips.