That's good info for making a permanent shrink fit, but the trick with the tooling application is getting the tool out of the holder when you want to change tools. It's difficult.
I should point out that it's easy with carbide tool shanks, but very difficult with steel, because of carbide's lower coefficient of thermal expansion.
-- Ed Huntress
Not expecting the OP to use that page for his shrink fit, just passing along a source for information.
They have a lot of free information, videos, technical data, theory, application & How To's, including for this OP how to design coils, but he will have to navigate the site to find them all.
Tom
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