Print with ABS or ASA to withstand chamber temps without deforming.
These mounts don't use the openings in the chain links like others that interfere with the chain bending.
The PTFE slots are provided on the inside of the chain and top, your choice to use.
The author remixed this model.
This remix glues to the vertical solid band of the chain link and doesn't interfere with the chain bending like other PTFE chain mounts.