Book, oh well hopefully I'll get it started soon
As for the first one, in most cases where I see this, the point is all the way on the far end of the timber -that is, the lap goes all the way, making it a super-simple joint to cut, just saw two lines along the timber's side, then chisel or axe or adze out the waste, can be done in about 2 minutes.
When you get the the refined laps, those are awful complicated to lay out, the best ones -functionally and visibly- use some rather complicated geometry.
In good news though, I got my compass back out, and did some old-fashioned geometry today, laying out my barn according to the compass geometry. This thread inspired me, since I was looking at these laps and figuring out how one could drawn them with the compass to make effective layouts
