Gridfinity Project Case

The gridfinity system from Zach Freedman (https://www.youtube.com/watch?v=ra_9zU-mnl8). called out to me, but I was similarly inspired by the modular project case design by Alexander Chappel. So this is a 4x5 gridfinity compatible project case that closes and has an acrylic top so you can easily see the contents. It is 6 units high. All bins will need to reach the lid to secure (totally to 6 units tall), but not all grid spaces need to be used thanks to the top grid in the lid. 

As someone who does not have the fixed space to store a lot of loose hardware, I often resort to these sort of cases to stash away material from curious children. Having the ability to selectively take the parts bins and place them onto a small workbench with a similar grid system seems useful.

The hinges are snap fit folding (compliant) hinges, ideally printed in TPU, but I’ve had moderate success with PLA. The acrylic sheet is 210mm x 168mm x 1.6mm (or 1/16”).

Snap the hinges into the lid and case in the open position, and carefully bend the hinge by closing the box. You will see the material stress under the fold, but it should hold. 

The case is a large print. All parts are designed for .2mm layer height.

Based on the heavy baseplate design: https://bit.ly/3781R2A

Edited 8/21/22: Updated models to incorporate a more traditional print in place hinge to accommodate more flexibility (pun intended) for material type. This required some design updates to the lid/case models.

Edited 8/24/22 Discovered I uploaded the lid .stl with an alignment error with the front claps. Uploaded lid_v6 which corrects the alignment so the box can close without collision. Overall I am not satisfied with this lid design and I am working on a new variation. Ultimate plans are to cleanup the f3d file and publish that with parametric options as I already have a request for a 3 unit high variant for a jewelry box.