Gridfinity Paper and Letter Holder - 3x2

Just a simple module for holding mail and papers.

I designed the dividers to be 5 layers thick when printing using a 0.4 mm nozzle.  Set your wall thickness to 3 in your slicer so that they get printed with 5 solid lines.

The dividers themselves seem really strong and are securely joined to the base with filleted corners for strength.