A simple typewriter style keycap inspired by http://www.thingiverse.com/thing:417509 (which was too big to fit on my keyboard). The big issue I've had with all the other cherry keycaps is that the stem won't fit on the switches without a ton of cutting and filing. In this design, the walls of the stem are so thin that the printer ignored them and just printed 4 posts which fit perfectly. Win. The key in the picture is printed with ABS. I have printed it with PLA as well with good results. The ABS fits a little more snug on the switch, which may be due to shrinkage.100% fill 0.15mm layer thickness (adjust to your liking) 0.8mm shell thickness I reduced the print speed to 40mm/s (down from 50) to help with the accuracy of the stem. I also set the first layer thickness to 0.06 larger (down from 0.3) and the layer line width to 50% larger (down from 100%) than the rest of the layers. This helped with the detail in the letters, but wasn't really necessary for printing the blank keycap. It might be worth noting that those default sizes are for my Ultimaker 2 as I don't know much about other kinds of printers.