Printed in ProtoPasta High Temp V 2.0 CF PLA. That stuff is beautiful, and so is this design. Works like a DREAM.
Printed on a raft because leveling the bed for the CF Protopasta is a PITA. If you restrict the flow very much, it blocks up with a ball of un-extruded fibers. So I go to a small raft and it works like magic. The surface finish is beautiful.
This is the most elegant extruder design I think I've ever seen. With a stout sprint in it, this one will drag a filament roll up off the floor.