I’m pretty close to finishing the saw arm for the Chevalet, so I figured I’d better get the rest of the project modeled in CAD so I can sort out the joinery. Things go much more smoothly in the shop when I can focus on doing rather than juggling dimensions in my head while I’m trying to saw of chisel. At least for projects with this many parts.
So I pulled the major dimensions off of the blueprints from Patrick Edwards and modeled them in CAD — adjusted for the materials I’m using.
CAD rendering of Chevalet — still missing the actuator for the clamp, but mostly all together.
The joinery for the “stool” portion is mortise and tenon for the stretcher and the rear leg, but the front leg connection to the seat is an odd recessed dovetail to make room for the spring arm for the rear clamp.
Dovetail joint at the front of the seat is recessed to make room for the spring arm that forms the rear of the clamp
I’ll probably have another iteration of the plans later when I get to the clamp actuator, but this should keep me busy for a while. This version of the plans can be downloaded from here.
Nearly-complete Chevalet plans. The clamp actuator is the only significant piece missing.
McGlynn on Making 
This is going to be one hell of a nice machine! Almost qualifies as fine furniture. You should be able to install it in the living room right? There is a long history of proper gentlemen having lathes and the like in the parlor. I think you should lead the revival of this practice for the rest of us.
Greg
Ohhh, I like the way you think! I’ve been fretting about losing the square footage in the shop this will take up, and bemoaning the fact that there isn’t enough seating in the living room. Poof, problem solved!
When you present the idea to the powers that be, leave my name out of it. I have enough problems of my own.