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Seemingly impossible spindle adapter

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Wolds dweller:
Hi guys, new member here  and new to wood turning too.
I've just this week collected a new to me Arundel K series lathe which has come with all sorts of accessories including 3 chucks which unfortunately are nothing like the 24x3 spindle size of the lathe. After an awful lot of searching and research I've found they all are 3/4x16 threaded.
I've searched all over and cannot find an adaptor to solve this problem, I've emailed various people and haven't had a single reply, am I looking in the wrong place or is this just not a thing? Hoping someone can help!

Valkrider:
Charnwood have a lot https://charnwood.net/?s=thread+adaptor are you sure of the size at 24mm x 3TPI? You may have to have an adapter specially machined.

Bill21:
According to the Lathes.co.uk site it’s perhaps more likely to be M24 x 2.5?

http://www.lathes.co.uk/arundel/index.html

Good luck with your quest. Let us know how you get on, it may help others.

Edit: When these problems crop up I often wonder if a bigger spindle (perhaps from another manufacturer) with a more common thread could be re machined to give these old lathes a new lease of life without resorting to adapters? Bearing sizes may be a limiting factor though.

Wolds dweller:
Thanks for the replies so far guys.
I got the spindle sizing from here it's an Arundel K series
http://www.peterchild.co.uk/chucks/threads.htm
I've got the manual but it doesn't have any specifications in it. Where would I get something machined? There's a couple of faceplates with it that fit and ford oil filter connectors are the thread I need for the chucks it might be a bit heath Robinson but can you see any problems with welding one to the other? As long as it's square!

Twisted Trees:
https://www.westcountrymachinery4wood.co.uk/search.php?search=Thread+Adaptor+Insert+M24&submit.x=0&submit.y=0

Not a solution unless the chucks you have are Nova, or at least compatible with it. but it is a starting point.... perhaps you need to sell the chucks and buy a new one that fits.

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