Help w Polycarbonate Black Specks

[Crabstix]

We had similar issues. We resolved this by not leaving any material in the barrel over night, so in other words, purge out as much PC as possible and then even purge with PP. Its a pain in the ass but it works.

[Pilot]

As Crabstix wrote. .. this is MUST. the screw must be purged out, PP for is a good for it. Somebody call it like "issue for Mondays" :-)