In the past I used to use Mylar for plotting out the full size body sections used in assembling the frames . Mylar is dimensionally stable ( unlike paper ) , but is hundreds of dollars a roll and my plotter can only plot 36" wide . This time I used a V tipped cutter on the Shopbot router and engraved the body plan onto a sheet of 1/8"fibrex ( about fifteen bucks a sheet .) Plus I didn't have to align and tape together the sheets .

The first set of frame parts cut out to the correct profile within thousandths of an inch this time .

 While I was cutting the frames I bored alignment holes into all of the parts , so that all I had to do was tap 1/4: dowels into the holes to pull all of the parts into alignment.