Boring out the through hole bigger. This is the boring bar I used on my compressor con-rod repair. EEK I just rembered I have to get back onto that project.
Now counter boring for the location ring that I made earlier.
Anywhere between 1/2 thou inch to 2 thou inch interference will do, am aiming for 1 thou inch. You can see the dial indicator there for fine adjustment of the tool as I am getting close to size.
Out of a piece of "Make-A-Key" keysteel I made this quickie tool holder. The tool holder is being held diagonally between the 4 jaws of the chuck. I traverse the saddle to a reading of a dial hanging at the front of the lathe then I shift the tool holder a little way across then cut in to the same dial reading. The tool holder is pushed hard against the chuck face as I tighten the jaws.
Getting close to finishing that face now.
I've turned the casting around and set it up and have faced it in the same way as I faced the 1st side. I am now machining a chamfer on the through hole, The copper packing is because the jaw is hitting on the grub screw that holds the tool in the holder. I also moved it out and chamfered the larger diameter step.
Here is the stainless steel location ring that I'd made first, and the finished recess in the casting. I finished up with 1 thou inch interference which will be peerfeeect. Leaning up against the vice is the pattern.
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