gridfinity stackable tweezer rack

This is a fresh take on the classic gridfinity tweezers rack.
The main addition is that this design is stackable when empty, allowing it to be easily stored together with other modules when not in use. The dimensions are 1x2x15u.

Other than that its mainly an aesthetic choice.

To assemble this you will need:
* 1x bot
* 1x rack
* 2x side
* super glue
* optional: sand paper for roughing up the glueing surfaces

All parts are printable without support in the preset orientation, tho the fillet on the "side" parts might result in some minor aesthetic defects.