This is a minor remix of the "ninjaflexV4" feet for the wanhao duplicator i3. I made the pocket shallower to better accept some foam I had laying around instead of printing a ninjaflex plug. I also made the screw slightly wider (2%) for better engagement with the mount.
The foam I used is approximately 9mm or 0.3inches thick. I put a drop of superglue to keep it in place but this probably wasn't necessary.
Printed with PLA @200C with 0.15mm layers. Currently I have 6 of them installed.