Blocking Board for Small Items

Wife needed a blocking board for a project where the thing being blocked was already attached to the larger project. This is a 3 1/4" square with ~1/8" holes a 1/4" apart, and a channel that allows the board to slide in place. For the pins, wife is using toothpicks. OpenSCAD file attached is well commented so you can change any of the parameters.

Original openSCAD file was created using Google Gemini, with some refinement by me.

Printed with PETG
No supports
No brim
Infill is your choice, I did 50% on the first and it was overkill