Tennis Racket Vibration Dampener (using a pencil-end eraser)

thingiverse

This user hasn't encountered any beneficial information about tennis on Thingiverse, so they decided to create their own dampener for tennis rackets/racquets. The design is affordable and includes three options: "FIX" with a position fixer and a flat piece with the creator's initial, "NORMAL" featuring two flat pieces (one with the initial), and "DE-INITIALED" which consists of one flat piece without an initial. Instructions and material list are provided on the instruction page. To make it, you will need M3 or 1/8" nut and screw of 10mm or 3/8" (preferred), printed parts (two flat pieces for NORMAL option or one flat and one fixer for FIX option), super glue (optional but highly recommended), a rubber cylinder from an old wooden pencil with a diameter around 7mm, and a utility knife or scissors. Instructions include cutting the rubber into 4 pieces about 1mm thick, gluing the rubber to the printed part's round hollow areas, and attaching it to the racket in the designated location.