It works!

[andy bessette]

The chipped edges of the cuts are pretty ugly, but the fit seems serviceable enough.

[Osvaldo Cristo]

Thanks all for the encourage kind words...

Attached you will find the two blades I used for that application: the bigger one for "vertical" cuts and the smaller for the "horizontal" ones. It was done completely at free hand. No guides but the pencil traces. No jigs.

I needed to go slower with the transverse (I named them "horizontal") cuts with the small blade as it was prone to vibrate.

All the best,