Strange reamer designations

Jonathan Coates · Feb 19, 2024

Well I got a reply from Presto which confirms that these were specially made for a customer, but they can't give me any details as it predates their IT system and all the paper records are long gone.
Looks like a hole will have to be made then.

Wonk · Feb 20, 2024

Richard Carlstedt said:
I have some such reamers in my tool box that were picked up years ago at a garage sale or auction.
I estimate the size and drill a slightly smaller hole in some aluminum plate ( 3/8-1/2 ") and then carefully ream the hole and measure it and then put a tape wrap with size on the shank.
You want the work piece thick enough to use a telescopic gauge for measurement
Rich

Gauge pins would probably be even more precise if you have the blessing of owning them.

Strange reamer designations

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Jonathan Coates

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Strange reamer designations

Help Support Home Model Engine Machinist Forum:

Jonathan Coates

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Wonk

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