Originally Posted By: "Lignator"
But what I want to get down to is the method of marking out, based on centre-lines.

I have used this since on all my oak-framing, using "nodes" crossing centre lines with trigonometry. (I establish a line in the "beam" then square off it) Then I use offsets/scribes. It's damned accurate.
I take it others must do this, but I don't hear of it: do you guys use trig? I guess you must do but there's not much information here.

Lignator, I generally work with log builders and don't know anything about Japanese framing and joinery. Given the nature of logs or dressed timbers the method you are describing is the only way to go.
The roof dimensions and their intersections (the "nodes") are determined using trigonometry. Joints at the intersecting members are built about these datum lines and points. Quick, easy and accurate.

Last edited by Joe Bartok; 06/15/07 12:22 PM.