I see where RRRF has nozzles and barrels for the extruder. And it sounds like the printed (or molded) parts will become available soon.

Any sources for the split bearing and extruder screw? I don't think my meager machine-shop skills are up to the challenge of home-brewing those.

I make mine out of 1/4 inch steel bar stock using an electric drill, a vise and a hacksaw. Making one takes about 5 minutes. You have to heat them to press them into the polymer pump since they are squarish rather than round but that's no big deal.

hey steve,

i actually have the extruder screws in stock, but for some reason i havent put them up on the store yet. i'll correct this oversight.

i'm still waiting on a shipment of the bearings, but i'll put those up too when i get them.

Forrest is right: its actually not too hard to make the drive screw with a drill + a dremel. the machined ones are definitely very nice though. i'll have more info soon.