I wanted to design a chair with the lowest possible moments at each joint but stay away from the original straight leg design. By using Force Effect by Autodesk on an Ipad, this is what I came up with:
With a load of 200lb evenly distributed across the seat of the chair, there is less that 8 lb.* in. of torque at each joint.. Since this is only my first design, I decided to build a 1:8 scale model of the chair out of wooden matches and superglue. Here are the following steps to building it.
Step 1: Set up and prep
First is the set up for the project. You will want to place wax paper over a hard surface that you don't mind getting cut up by razor blades. (I used an old notebook that I had laying around) Set out your wooden matches and cut 8 of them to 2in. and 2 more of them to 1.75in. using the razor blade and set them aside.