Filament refusing to feed.

[Alibert]

The PTFE insert type tube is Not needed !
It causes more problems than it helps !
( a Stainless-steel tube with No insert works best, for the Longest time )

Nevertheless most (all?) replicator clones I know of are delivered with ptfe liners. If you have that kind of heat throat, the inner diameter is too large to use it without a ptfe liner regardless of the ptfe/all-metal debate....

[EagleSeven]

Nevertheless most (all?) replicator clones I know of are delivered with ptfe liners. If you have that kind of heat throat, the inner diameter is too large to use it without a ptfe liner regardless of the ptfe/all-metal debate....

Our CTC-Bizer did Not come with PTFE type tube.
No, the inside diameter of the steel only tube is the same as the inside-diameter of inserts.

Try 'em, you will Like 'em !