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TOM Sound Damper by Bluemetal is licensed under the Attribution - Share Alike - Creative Commons license.
© 2011 by Bluemetal
Instructions
I sourced the springs from McMaster Carr. They are part number 9657K18 and come in a pack of 6 for USD 9.98 - the dimensions are O.D. 0.875", wire 0.091", length 3" and they are design to deflect 1.35" under the maximum load of 25 lb - so when divided by 4 springs and the TOM present weight, the travel is about 1/4".
Print 2 lefts and 2 rights. 4 pieces of the other two parts.
You may need to ream the large 10mm hole on the supports for cleanness.
Glue the heads to the marked position in the supports. I used a few drops of acetone and clamps to hold it in place for a few minutes.
Replace the lower front and back TOM 16mm screws with 20 mm and install the supports or use the countersunk versions to use the original 16mm (this is untested as I had the 20mm screws and added this version as most people will not have the 20mm screws laying around).
Insert springs in the feet and under the supports. The springs are not tightly held at the ends so if you move the TOM a lot place a little dab of hot glue inside to keep the springs in place.
Because the bottom part is not held in place like the original design, dragging the printer over the desktop may cause the springs to come out of their correct position, so do not drag the printer! :)