here's a close up with some lables. take a piece 1, brass in this case). Bore the ID to the radius of the "D". in the mill, cut into the bore and then solder on a flat piece, piece 2 - it forms the straight leg of the "D". back to the lathe, turn the od, you're now turing the soldered fabrication of 1&2. turn to, and install in a bore in 3. If the bore and OD are to titght tolerances, it will be fairly accurate.
This piece is the handle for tapping tool for very small taps, the fit is very good but its obviousl low speed/force/duty cycle application. I'd have to check temp charts for soft solder, but there's a danger the soldering the brass is annealing it, you could do the same in steel and solder or press fit it into the wheel? |