Drawer organiser

The high of the organiser is 42 mm, but you can easily scale with prusa slicer.

The gap size is 3.2 mm. It accommodates panels which are 3 mm thick, whether meatal, plastic or wood.
There are a total of 3 different elements, from which any layout/partitioning can be created.

I uploaded some other thick panels:

2 mm
2.5 mm
4 mm
5 mm

Update 11.2024:

Following Akrion's suggestion, I added 2 more elements to the original design. You still only need to print 3 different elements, but you can choose to have the T and X elements closed in the middle.