The outside diameter of the thread is a tiny bit below 24mm. 1/16 inch divisions on the ruler will exactly line up with the peaks of the thread.Ģ4mm x 3mm pitch. The outside diameter of the thread is a tiny bit below 3/4 inch. 1/8 inch divisions on the ruler will exactly line up with the peaks of the thread.ģ/4 inch x 16 tpi.

The outside diameter of the thread is a tiny bit below 1 inch. It is often possible to guess at common thread sizes with an ordinary ruler. The Peter Child shop is now closed and the information is left here in the hope it will be useful Only a guide and lathe makers vary the thread they use from time to time. Robert Sorby make 'Exerts' to adapt chucks to fit large threads such as Viceroy 1.5 inch x 8 t.p.i. The thread in the Patriot and Supernova where the insert fits is 38mm x 3mm. Unthreaded chucks are available from suppliers if you can arrange your own machining. The Patriot 1,1/2' version is dual threaded left and right so it can go on either end of a Harrison Graduate spindle. Patriot and Supernovachucks in 33mm x 3.5 thread and 1,1/2' have to be specially made with the thread cut in the body, as there is not enough room to take an insert. Nova DVRXP, Modern Woodfast with Record badge, Nova, General 260

Harrison Graduate, Apollo Professional, most Poolewood, Axminster SuperlatheĪpollo (except professional), some Sorby, Astra, Tyme Avon, Selbix Note the register size varies and specials may be required. Konig, Emco, Sheppach and most German lathes use this thread but please

Woodfast, some Sorby, Killinger, Wabeco, Hapfo, Hager, Flott, Latest Record lathes, Hegner, Axminster and Jet commercial. Of far-Eastern lathes use either ¾' x 16 or 1' x 8 TPI and you Latest Record lathes are 33mm x 3.5Īxminster M330/600/900/950/AWVSL/Perform, Delta, small Jet and Fox.ĭraper, Nu-Tool, Clarke, Naerok, Rexxon, Seally, Hilka and other importers Old Record, Coronet, (except red paint Major) Most Drapers, Carba-Tec.

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