refinement

From my last 1:1 model I worked out a few things. The first being that as it stands the seat doesn't feel quite wide enough to sit on (currently 400mm). The second being that the angles of the arms don't quite work. Both of these things can be fixed easily. I will pull the edges of the seat out further and create a locking system under the seat system then make the seat itself slightly wider to make it more comfortable. I will then re-calculate the angles and sides of the triangles that make up the arms. 

The next thing I will need to work on is the folds in the x-board so that they all fit and fix properly.