Crazy question but new to this

[WillAdams (William Adams (Carbide 3D))]

That design would need to be adjusted to account for the radius of the V endmill.

One approach for that would be to use a V endmill or a cove radius endmill to relieve things — for doing this with box joints, see:

Design into 3D: Boxes: Magazine storage

Next up is more boxes, this time for magazine storage — for my part I just cut open Fed Ex boxes: [WIN_20190912_14_02_59_Pro] But they’re not always available in a suitable size for typical magazines. There are a number of commercial options: So there is certainly precedent for wooden boxes — we’ll try for an inexpensive material, since this is going to be a fairly large project (sorry Nomad owners) — Luan Plywood is available at most home centers, usually as underlayment, a bit of care…

or

Radiused Box joints

For doing this with mortise and tenon joints see:

Mortise and Tenon Joinery