Well the forklift car from Henry's "Culdee's Apple Train" set snapped in two.
A lovely clean break.
A 1/8" thick aluminum plate that screws into and is screwed into to repair the two halves.
You hardly notice the repair from on top...just those two countersunk screw heads.
A Williams peep sight I picked up cheap at the local gun shop, held in the vise on the Taig mill.
One of the mounting holes elongated into a slot so I could mount it to a Sheridan air rifle. I bought the rifle 2nd hand and the sight was missing.
The peep sight in place. Now I can hit the cans I'm aiming at.