When I saw this case I knew I needed it, I was carrying my Leatherman Bit kit still in the package to make sure I didn't lose any bits. But I thought that resizing it in the slicer didn't make a lot of sense so I resized to fix exactly and I thought I would add some 2mm holes and use filament for the hinges and it worked out great. Once you insert the filament you can either melt one end and snip the other with side cutters or leave it. the friction should keep it from moving at all.

printed with .200mm layers, 20% fill, and 1.2mm shell.

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https://www.tinkercad.com/things/1v97Fwunnpt-remix-leatherman-multi-tool-bit-set-case