I have printed a few things using TPU on the Cetus with mixed results. Much too frequently I'd have failed prints because the TPU would bend and push sideways, out from between the feeder gear and the cold-end of the nozzle. My solution was to re-design the guide for the filament feeder so the gaps above and below the gear and guide are much, much smaller.
I'd recommend printing in ABS or nylon. The one I printed in PLA started to deform pretty quickly
The author marked this model as their own original creation. Imported from Thingiverse.