@i6pwr asked for this in another thread so I thought I'd post it here. If you're a professional draftsman or a stickler for proper blueprinting please look away now!
Honestly trepanning that deepest bore is gonna suck. I'd find a way to do this as two pieces, with the large center protrusion (dia 1.295") threading or pressing or even welding into place later.
First, a few pics, truly worth a thousand words:
Then, some "prints" drawn by a child in pen:
Honestly trepanning that deepest bore is gonna suck. I'd find a way to do this as two pieces, with the large center protrusion (dia 1.295") threading or pressing or even welding into place later.
First, a few pics, truly worth a thousand words:
Then, some "prints" drawn by a child in pen: