thread cutters

I have had these for years and hardly ever used them,hope photos are shown,

I presume the depth of cut is controlled by gradual closing of dies using the adjusting screw on die holder, but how can I be sure that the correct depth of thread has been reached with any accuracy?maybe the female part should be used if convenient,but what if it isn't? Out of interest the equipment is dated 1943/4 and manufactured by --Platt & Brothers of Oldham and Pickford Tools of Sheffield------Mick H

Mick,

I am happy to be corrected, but I believe these are intended as "constant pitch" dies for pipework, etc. ... and therefore there is no "correct" diameter.

MichaelG.

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Edit: Also useful [as noted by Martin] as a thread cleaner-up-er-er

Edited By Michael Gilligan on 04/01/2015 10:16:53

I was always led to believe they were for thread repair and the screw was for just holding the parts in place.

Martin P

Thanks gents your comments sound logical, I expect they will come in useful at some stage

MickH

I thought they were simply a larger version of ordinary split dies - it being difficult to make large split dies that can be adjusted without being fragile.

You would test the thread with either a gauge nut (for most practical purposes) or the three-wire method.

Neil

Thanks Neil--I reckon they'll cut a thread ok there is a tommy bar hole in the adj'usting screw I'have to give it a go, incidentally although I check the"remember me"box when logging in why doesn't it? Mick h

Hi Mick,

It should remember you for a week, but if you log in to another MHS website (e.g. model boats), on another computer, or your browser doesn't keep cookies, you will be logged out.

Neil

Those dies are quite all right for general jobs, just check the thread with a nut, when it feels right that's it.

Ian S C