I have installed the Rosahl MDL-3 solid state dehumidifier on my AMS-2. it keeps the humidity down to 5% or 6% if you dry the filaments first or just let it run for weeks. (see CNC Kitchen solid state dehumidifier on youtube ). If you do this mod remember teflon tape for the bolts.
I am wondering with PVA or BVOH use, would a dedicated 24/7 dryer be better? I have the AMS-HT but it only runs on demand and when you aren’t printing…
My first roll of BVOH worked great with my settings (similar to yours : temp higher at 245c, Z offset lower at 0.08 instead of 0.20 , style=normal not tree. I also turned off cooling fan for better adhesion of BVOH to PLA (see filament settings).
My 2nd roll of BVOH must have shipped wet as I cant seem to dry it… The humidity in the AMS-HT is at 20% even after a 5 hour dry, it climbs pretty quick again… i dried it at 5 hours at 55c as recommended, And my same test prints are failing (clogged nozzle). I suspect from wet support filament. H2D makes changing nozzels easy and I bring it to the garage and clear it with blow torch and allen key like you and someone else suggested…
I’m dying to have a reliable dissolvable support material. The first roll was great for many prints, but then it must have gotten wet sitting in the AMS-HT idle for a few days…
I’m going to try moving it to the AMS2 with the rosahl to see if that solves it. If that fails, ill get a single spool holder that dries 24/7…