This is Tinsuj's Harbor Freight hollow punch set organizer tray hacked onto a 3x3 Gridfinity base.
I didn't bother adding labels to the slots because my punches are clearly marked and they only fit the proper slot anyway. The set is a snug fit in a 3x3, some of the punches are right up against the sides, but they're still easy enough to get in & out of the holder.
This was designed to match the height of my existing Gridfinity 3u bins. It may need to be extended to 4u in order to stack bins on top because of the height of the 1/2" punch -- I don't think it can be recessed much deeper without cutting into the base. I'm not going to be stacking on top of this holder so I never tested, it didn't even occur to me to test it until writing this summary right now. :-)
STEP included.
HF_Hollow_Punch_Set_Holder_Gridfinity_3x3_3u.step | 736.4KB | |
HF_Hollow_Punch_Set_Holder_Gridfinity_3x3_3u.stl | 766.7KB |