Squeegee (three types)

Print core in PETG or similar. 3-4 walls/top/bottom, >15% infill (to taste).
TPU should be on your flattest, smoothest build plate for best results.
Use seam blockers (paint on seams) or other settings to keep seams away from the business end of the tool, inside and out.
The lower the nozzle temp the better (or enough to reduce stringing, I printed my best one at 225c)

The pause needs to occur just before bridging.
     1. Slice the model
     2. Move the layer slider to the bridging layer
     3. Add Pause
     4. (Bonus) add a small cube next to the squeegee that will act to purge the nozzle when resuming.