When you remove the smooth cover from the lid of the Packout toolbox (48-22-8424) and large Packout toolbox (48-22-8425) you will see a grid of structural ribbing similar to that of the Packout rolling toolbox, except for the addition of large circular holes that get in the way of mounting bit trays like you can in the rolling toolbox.
This update to the Packout lid bit trays takes a circular chunk out of the bit tray so they will fit into these toolbox lids, but it does so at a price: you loose bit storage. You will only be able to fit one bit holder and you won’t be able to use all the positions in that holder. Still, with eight places you can position the bit trays you can store up to 48 bits in the lid.
These modified bit trays do not press fit into the openings, because you would basically need eight different types of bit tray and I do not want to do the work to print and test a separate bit tray for each opening. So tape or glue is required to keep these bit trays in place.
Even though every opening is shaped slightly differently, they still are somewhat symmetrical so you only need two different types of bit tray, and I’ve provided the STL files for each in the files section along with the model so you can modify the design as you need.
Printer: Prusa i3 MK3
Material: Inland PET-G
Resolution: 0.3 mm with a 0.4mm nozzle
Wall Lines/Perimeters: 3
Infill: Minimum 10% Gyroid. The higher infill percentage the stronger the part.
These are the instructions for keeping the Packout rolling toolbox bit trays stuck in the lid, they will also work for these toolbox bit trays.
To keep the bit trays in place, I recommend using a pressure sensitive tape like 3M VHB tape or using a few dabs of hot glue like in the video below.