The main frame is made from 0.100" x 0.7" x 7.0" aluminum bent to form a 3" overall length.
The threaded rod is just some 5/16" fine all thread that I had. The entire unit is 4" total length.
The square steel piece that grabs the pinion is indeed steel tubing.
A few days ago I could mark all forums read by clicking on the horological education button on the left of the corresponding forum. It would take me to a New page with the mark forum read icon visible. This is now missing.
My shop is in the basement and has all of my stuff that I would consider my shop machining, and clockwork.
Size is about 10' by 12 '
Work area is in two groups, One is tall where I can stand and work and is about elbow height when I am standing. The other bench is traditional heavy...