Befor doing any more work on the buffer "castings " I needed a cutter that was .234" in diameter to cut a flats for the bolts, the problem being that the nose was in the way for a straight cutter, so I had to make it a wider cutter than the shaft. I used some 3/8ths drill rod (silver steel) turned it up and filed the teeth which are rudimentary at best. Heated it to a cherry red then plunged it into a jar f vegetable oil, to harden it.
The second buffer "casting" first the milled corners were rounded, then using only the hot air soldering gun I soldered in the top three pieces first then rotated it over to add the bottom piece.
The next operation was to turn up a new mandrel and glue the "Casting" onto it in order to machine the end. fortunately I had already made a cutter for some other job some time ago so the rounding was easy. I just rotated the chuck by hand to do the cutting, and it worked well .
Next a soak in Acetone to dissolve the glue.
Then it was placed into the Blackener Jar.
After the piece came out of the blackener the white chemical again showed up where the solder is.
A scrub with the toothbrush in hot water cleaned off the white deposit.
There is some colour difference I did not leave it in the blackener too long so after a clean up in the morning I will pop it back into the blackener.
Michael