Compared to other designs for plier holders I made following design decisions
The holders are stronger and beefier to widstand a bit more abuse
The holders have tabs added in addition to the hooks to make them clip onto the Skadis board firmly. Some tool holders I have tried tended to clip out when I was taking my tool.
The holders can be printed without any supports
Printing
Use PET-G to print the holders. You need a little bit of flex when clipping the holder onto Skadis board. If you use a firm material like ABS it may be very hard to clip the holder onto the board.
Use 4 or 5 perimeters to make sure the holder is strong, Especially tabs and hooks.
No supports needed if your cooling is sufficient.
Installation
insert the hooks into the board holes
push the holder down and towards the board until it clicks into place
verify both books and the tabs have locked into the holes properly
Uninstallation
Firmly but carefully lift both tabs away from the board and push the holder upwards so that the hooks unhook from the board