I have a SUNLU S1 drier box. It has a hole for filament at about 45 degrees and completely horizontal.

My X1C is in an odd spot in a steel shelve in the closet. This means there are not a ton of spaces that the dry box can go.

I have tried two positions for the dry box. One is about 2 inches below the printer to its side using the 45 degrees up hole.

The other is above the printer about 3 inches above where the filament feeds in at the top of the X1C.

In both cases the filament eventually stopped feeding. It is a roll that I have had trouble with so some of it got unwound a bit but not necessarily tangled. Sometimes the toolhead pulled the whole spool almost out of the dry box rather than spinning the spool.

I figure it was a combination of the angle with the spool size with the small overlaps in the spool.

Anywho I am going to start using PTFE. I am planning to install a connector such that from the exit of the hole to the printer the filament is in a PTFE tube.

The question is are there sort of any restrictions here? Like is it bad to have it feeding from above the top tube? Or below the printer? How fast can I have the tube turn?