=== [The Actual Description] ===
This is a Gridfinity collection based on 50mm cell sizes. There is a 5mm gap between cells and the tolerances are 1mm. Supports are not necessary because the overhangs are 5mm long at maximum. However, if you wish to use supports, you may do so and it may provide better bottom surfaces on the overhang. A brim or raft is not required, due to the 25cm^2 surface area but it may help adhesion nonetheless. You can use any material but generally, PLA is a good choice.

DISCLAIMER: I AM NOT AFFILIATED WITH POLYMAKER IN ANY WAY. THIS IS A PERSONAL RECOMMENDATION BASED ON MY PAST RESULTS.

I have used Polymaker PolyLite PLA Pro for many projects, and it works well for parts like this. You can also use PolySonic PLA Pro, which has the same mechanical properties but can go up to 300mm/s.

=== [What's Included] ===
In the zip file, there is the following:
Cells:
1x1, 1x2, 1x3, 2x2, 2x3
Grids:
4x4

=== [Legal Stuff] ===
This content is distributed under the license CC-BY-NC-SA 4.0 International. The link to the license is here: https://creativecommons.org/licenses/by-nc-sa/4.0/deed.en. The license includes these terms:

1. You must give sufficient credit to the original creator of the content if you remix or create a derivative.
2. You may not use this content for commercial purposes.
3. You must distribute all derivatives and remixes under this same license.

Note: I AM NOT A LAWYER, THIS IS MY INTERPRETATION OF THE LICENSE. DO NOT RELY ON WHAT I HAVE STATED HERE. GO TO THE ACTUAL WEBSITE AND LOOK AT THE TERMS YOURSELF.