I didn't want to post these in the Stuart thread when in actuality they aren't Stuarts but they were modeled after the Stuarts that I have built over the years.
The first one was modeled after the Stuart #4 and scaled down to fit the parameters specified by the Sherline company for their first model engineering contest. I later built several more, one of which was sold to Mrs. Red Ryder. The small bolts are M1.0 x .25 stainless hex bolts. I made the longer ones for the reverse linkage. It's made from 12L14 steel with drill rod for the shafts.