As some of you know, I was boring and polishing stock A manifolds for B carburetors. I lost my bore plug, locater pin which I didn't consider really satisfactory. I don't have the access to steel I once had so I have to improvise. I was wondering what I had around that I could use when I saw an old sector gear that I missed on my last scrap drive. Aha! Sez I, and tried in the bore. It fit rather loosely, but with a wrap or two of tape to snug it up, it will work. I chopped the geared end off which gave me a piece of 1 1/8 round stock with a squared end. I checked the hardness with a file. OOOPPZ The file bounced off! It had to be annealed to cut. This is to make it fit a 3/4" Bridgeport Collet. I'll have to turn it down. Because of it's hardness and the interrupted cut due to the squared end it wasn't going to be easy. It had to be annealed, period. I figured that the gas barbecue would come in handy for this. I cranked it up to it's full heat and then I played a MAP gas torch over the shaft at the same time. Before long, it had gone through the heat colors, yellow, brown, dark blue, purple, then light blue and glowing red. I had a bucket of ashes ready to receive it and I let it cool for a few hours, tested it with a file and while it's still somewhat hard, it is workable.
Terry
Terry
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