Oh, so sorry Tobias. I just posted to Stephan in another post. I guess his name was still in my head.
So the dotted lines in the upper and lower cheek timbers in your photo. Where in between them the trail board you are carving will be placed. They dotted lines indicate that a slot will be rabbited or mortised in them so a tenon or tab that is proud of the edge of the trail board will fit into. I'm curious if you will follow this and if so how wide will the tenon and mortise be.
Colors, as I understand the plan show where the head pieces will meet, yes?
View attachment 325254
As I understand, the cross section where those 3 elements meet would look like the picture below.
View attachment 325255
I was curious if you were going to create the joints or just glue the trail board to the cheeks. If you were going to create the joints how wide would you make the mortise/tenon part of it. The reason I'm asking, is I have the same method outlined in my plans for Le Fleuron, but cannot find information on the width of the mortise and tenon.
Just curious. If my question is not clear, don't worry.
Thanks.