How would you go about machining this rough casting?

Lo-Fi said:
It's buried in a toolroom tips video. Excellent content as always from Robin:


Yep, you're right on with the taper. Self locking would be a pain, so steeper like the INT series seems sensible. I've found some taper reamers that look promising, so I'll order up and give it a go!

I'm transitioning from rough fit with persuasion to engineering fit. Getting the two base castings dead nuts on, both centre to centre distance and bore size Such that they're a beautiful sliding fit even right up next to each other was a bit of a revelation!
Click to expand...
I love the idea of the spring steel to protect the indicator probe.
My Shars diamond wheels have more run out than his.
Lots more work to clean up.
I also like the locking ring! Great idea. I wonder if he re-hardened the Sopko ring?
 
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