Logitech mechanical mx tactile keyboard bumpers

I bought a Logitech mechanical mx keyboard as a replacement of my old K270. I very much like the keys of the mx and the overall typing mechanics. However, because Logitech "cleverly" removed the spaces between the number row and the F-keys as well as the spaces between the F-keys, it is now impossible to quickly locate the correct position without looking. The different coloring of the F-keys does not help because I DO NOT HAVE EYES ON MY FINGERTIPS.

So, I created these little helpers to go between the keys and provide tactile orientation for the fingers. Now it is very easy to recognise one's fingers position without having to look away from the screen.

There are three versions:

• a square-shaped universal one (F-Keys, num pad, navigation keys)
• a special one with an additional bumper to go to left edge of the letters below F1
• a special one with an additional bumper to go to the right of the letters below F12

I printed it with Bambu P1S, PLA, 0.4mm nozzle, 0.08 fine profile. Note that the option "Detect thin wall" needs to be activated to print 1-layer walls with 0.4 mm.