This is a remix from the "space navigator for notebooks" handrest, it fits the desktop version. I made my inlay out of silicone, so it is even more comfortable to use. But you can also print it out of Plastic. The bottom part is available as one part or a version to glue two halves together, if the printer is too small to print the whole thing. (like mine)Print the bottom half. (the one or the two part solution) If you want the inlay out of plastic, just print it. If you want the inlay out of silicone (like mine) print the mould, sand it smooth, rub some liquid soap on it (helps to get the silicone out of the mould) squeeze the silicone into the mould, make sure the top part is flat. wait until the silicone is cured and unmold it. Done!