This is an addition to the Gridfinity storage system designed by Zach Freedman of Voidstar Labs who “stole” it from Alexandre Chappel.  I made this storage box for a set of ER-16 Collets and Collet Nuts.  It uses a 2x3 area of the grid.  It's probably taller than it needs to be.  I plan to model a cover, but I wanted to get the storage bin out there first.  I can't be the only one out there with an ER-16 Collet Set and an addiction to 3D printing and Gridfinity…..can I?

The blue nugget nested in the storage box is a simplified version of the collet. The collet nuts go in the pockets with posts on the right.  M&Ms optional and for scale.

I printed mine in Prusament PLA - Galaxy Black with 0.30mm layer height.  No supports needed.