thicker bumper, taller bumper and for micro-magnets

the bumper on my vacuum robot needed stiffening as it would bow in the middle and not allow the buttons to be pressed

the taller bumper file covers a larger area in height at 28mm

the bumper for button magnets file uses 12.5mm x 4.75 or near enougth to it.

the file with 12x3 is for magnets from here https://www.aliexpress.com/item/50-Pieces-set-12-3mm-Small-Round-Neodymium-Magnets-Disc-Strong-Rare-Earth-N50-Fridge-Magnets/32796322497.html?spm=2114.search0104.8.78.uM8iKz

the idea is.... glue one magnet in each of the two holes in the bumper then check the poles on another two magnets so that they attract to the bumper magnets then glue those into the 16mm x 16mm button plate, the bumper can easily fall off when the button plate is glued directly to the bumper but this way you just line up the magnets and leave it.