I bought a roll of TPU a long time ago but had been wary of it, with many horror stories of using it with bowden setups.
I do have a 3:1 geared extruder but it prints really beautifully, I was surprised at how well it printed. Only one issue with a bridge on the benchy and it's honestly hard to see without examining it. You can see it in the second picture, it's a single line sagging a little. Even the lettering on the bottom came out good. I didn't clean up the stringing at all, and it's minimal.
225 C hot end, 45 C bed, 0.2mm layers with an 0.4mm nozzle. Tronxy TPU. 15% infill, gyroid fill, with 3 walls and top and bottom layers. 22mm/s max speed with half speed on the first two layers. 100% blower fan from a 5015 fan in a petsfang duct.
Now that the trepidation is over I can think of lots of cool things to make from this stuff.