Comment on Issues using PVA with a Prusa XL
EmilieEvans@lemmy.ml 2 months ago
PVA would come out in big bubbles instead of thin lines.
Dry the PVA before use and keep it dry.
PVA easily crystalizes and if this happens the $30 filament spool is trash. Also, make sure to drop the temperature by more than 5°C for the parked toolhead. Otherwise (you guessed it) it will crystalize and cause a clogged nozzle.
<Rough time estimate is 5-30 min at PLA temperature with no flow but this number depends on the exact PVA filament variant.
mortalic@lemmy.world 2 months ago
I was printing at 190, is that still too hot? It was fresh out of the vaccuseal when I attempted this, but for future attempts I’ll be sure to dry it.
EmilieEvans@lemmy.ml 2 months ago
You should be fine. It is about temperature and time. Don’t keep the nozzle heated up when it isn’t used. Don’t dry it frequently (keep it in a dry environment) and use low temperatures.
190° is the low end of printing temperatures. SainSmart should probably be okay when printed below 210°C
With “special” PVA like FormFutura Helios you go up to 250°C: formfutura.com/product/helios-support/
Regardless BVOH should be the better choice at higher cost.