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Boxford missing a Nut

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Chris George	23/05/2020 19:42:56
5 forum posts 1 photos	So I finally jumped in and brought myself a Boxford Lathe, and currently just fixing all the issues. Managed to figure out how to take the play out the cross slides etc. However just notices a small bolt missing. The thread is a little damaged but looks like it could be a M6x1.25. But as it’s a British machine made in 1952 I’m surprised it’s metric? Anyone have any pearls of wisdom or knowledge they can shine on the situation.
Keith Long	23/05/2020 19:48:23
883 forum posts 11 photos	More likely 1/4in BSW (20tpi)
old mart	23/05/2020 20:15:49
4655 forum posts 304 photos	Take the handle off to expose more thread. It could be 1/4 BSF, or 1/4 UNF even, as the lathe is a South Bend clone.
Pete Rimmer	23/05/2020 21:33:50
1486 forum posts 105 photos	It's a 1/4" BSW round nut with a slight dome top and a slot across it. You need a screwdriver with a slot ground in the middle of the blade to tighten it.
Sam Spoons	26/05/2020 12:27:51
94 forum posts	It is indeed ¼" BSW, mine has a narrow 'locknut' style nut on it. I know as I had to source one for the top slide. How are you going about removing backlash, I'm having trouble with mine on both cross and top slides and tailstock?
Oldiron	26/05/2020 12:55:25
1193 forum posts 59 photos	Agreed it is1/4 BSW nut with a rounded head. I made one for mine from a standard nut and turned it down to the required dimensions. regards

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