Hey,
i printed with PVA about 8 months ago and did not have any reals issues with it.
Yesterday i took the PVA out of a ziploc bag with dehumidifier bags and installed it into the Ultimaker 3.
As suggested i installed the BB0.4 print core. But for some reason the printer was not able to extrude the material.
Then i completed a hot pull and a cold pull cleaning step. Manually i could extrude the cleaning filament and i also tried the PVA succesfully.
However the printer is not able to extrude the material. I even left it overnight on the printing bed at a temperatur of 50°C.
Are there any people who have expierenced the same issue?