Anyone had luck setting up PVA-support dual extrusion?
I have a reel of PolyDissolve S1 and FilamentsCanada PVA and both are failing hard.
I’m using Lulzbot Cura 3.6.20, the current stable version.
I have PLA on extruder 1, the PVA on extruder 2.
Extruder 2 standby temp 170C, print temp 200C, speed 40mm/s.
There are 2 main problems.
After the Taz Pro purges the PLA and PVA, it retracts then blurps a bit of PLA but not the PVA. So when it’s time for PVA to print, there’s nothing coming out for a good XXmm distance!
When the PVA starts printing, some of it doesn’t stick to the bed and it curves and splits, creating tangles on the printbed. Most of the PVA actually doesnt stick! It seems like the curvesplitting also happens when the nozzle stops printing, due to backpressure and temperature (nozzle does not cool down instantly to 170C of course).
I’ve tried printing at different temps with the S1 (220, 210, 200), only 200C with the FilamentsCanada PVA.
What’s weird is that when I manually set the temp to 180 or 200 or 220 then manually extrude, the PVA comes out fine.
To solve problem 1, I’m going to set a long skirt for extruder 2 and get back to you guys.
I appreciate any help/guidance.