Restoring my dad’s lathe.

Restoring my dad’s lathe.

This topic has 3 replies, 2 voices, and was last updated 26 January 2013 at 22:39 by Ed Duffner.

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26 January 2013 at 22:02 #110154
Ed Duffner
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@edduffner79357
Hi Everyone,

I'm having a go at bringing my Dad's lathe back from the clutches of several years in the shed, rusting away. It's one he made.

For the main shaft he's put a thread on it which according to a thread gauge is 14, 7/16 and is 1.25" diameter.

I'd like to get a new chuck and back plate for it and would like to ask if anyone can tell me if this is a standard chuck/backplate thread please.

Thanks,
Ed.

Edited By Ed Duffner on 26/01/2013 22:12:37
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26 January 2013 at 22:02 #6545
Ed Duffner
Participant
@edduffner79357
Would like some help with a thread please, if possible.
26 January 2013 at 22:25 #110157
Keith Long
Participant
@keithlong89920
Ed

Depending on how accurately you've measured the diameter of the thread, you might find it's actually 7/8in BSP which is 14tpi with a major diameter of 1.1890 in.

Have you looked on the lathes.co.uk website, Tony Griffirths does give some spindle nose thread info on there.

The BSP size could make sense for a home made lathe as fittings such as flanges and unions would be readily available for adapting to make chuck backplates and adaptors.

One of the problems is that there are very few "standard" lathe nose threads, most manufacturers did their own thing so it's only popular makes such as Myford and Boxford that you can get easily through tooling outlets.

Keith
26 January 2013 at 22:39 #110158
Ed Duffner
Participant
@edduffner79357
Many thanks for the info Keith, I'll take a look at that website. I just double checked the diameter witha vernier and I was wrong first of all (i'll blame my eyes) it's actually 1.186" (30.12mm).

Thank you.
Ed.
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