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Allen,I think those units are properly called "Colonial", hehe.Nice project, and I contemplate a similar one...ER-32 to W-20, so I am watching your work carefully.Mosey
I hope you don't mind me making an observation on your design.
If I was doing this I would think twice about the 1/4" dia holes for the tommy bar to lock it to your lathe spindle, a 1/4" bar will probably bend too easily.Maybe you could put some flats on the body then you could use a decent sized spanner on it. Or maybe some slots for a "C" spanner
I think those units are properly called "Colonial"
Hmm, Chronos stock an item like this (currently made by Soba):
Quote from: Mosey on January 07, 2015, 05:08:41 PMI think those units are properly called "Colonial"No, Mosey, "inferial" is the perfect term. It's a portmanteau of 'inferior' and 'imperial' and both words apply perfectly to the insane set of units currently used in the backward USA.
Marv,Of course you are perfectly correct about those units, as even our military uses the metric system. I hear that as soon as we get a proper NFL team in LA, we are going to finalize the annexation and statehood for Californica.
This may be what you need,http://www.rc-machines.com/en/accessories/acces.-turning/chucks/collet-chuck-er32-myford-thread-1-1-8-x-12tpi
If you decide to make your own I would suggest trying to borrow a Myford fitting one or one which will fit the Headstock taper so you can set the taper from this. I have an MT 2 - ER25 which has the same angle but it's a bit far away
Here is a UK link to what I call a pin spanner. These are made to DIN 1810 standards. The text calls it a hook spanner with a pin.http://gedoreuk.com/default/products-1/gedore-2012/spanners/hook-spanners/40-z-hook-wrench-with-pin