The purpose of me making this model was to get a cleaner final print. Some of the other rounded ones I've tried work decently; however, it could've been much better because taking the TPU brim off was such a pain. I've made it plain so you can put whatever you want on there, and let me know if you want any other files or have any comments about your experience. 

I printed this dampener with SUNLU 95a TPU with 100% infill. I intentionally did not use supports since I wanted there to be some rough aspects of the print to be properly held in place with the tennis strings in the overhang area. It will be much cleaner with Organic Supports, and feel free to try that out, except I expect it to be sliding much more on my racket. I would not recommend printing at a low infill since the dampening effects are slightly reduced, and it sounds terrible when you hit the ball. Printing in the high 90s might actually work better than 100% infill in my opinion; however, this serves my purposes.

Commericially Sellable

Sorry for the slightly blurry picture btw.