Securing the template to two scrap log sections that are pinned together with rebar.

Routing out the slots in the template.

Knocking out the residual pieces.

Chiseling the notch for a smooth, flat back surface.

Bob's finished sample notch.

Shimming the template to get it plumb, then temporarily screwing it to the wall logs.

Routing out the slots in the template.

These notches will have angle iron brackets bolted to them which will hold the 2nd floor beams.