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Chuck and Catch Plate

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Howard Lewis	07/04/2019 18:44:33
7227 forum posts 21 photos	I have been given a 155mm Three Jaw Chuck, with only one set of jaws, and a Catch Plate. Both appear to be for a lathe with a 1 1/4" x 12 tpi Whit form thread Mandrel. If anyone, in UK, can make use of them, please PM me so that we can arrange collection. (Three possibilities ) Howard
Jon Lawes	07/04/2019 19:55:48
1078 forum posts	Could it be a 1-1/8 x 12 tpi whitworth form thread? That would be Myford. My apologies if wrong.
Howard Lewis	07/04/2019 20:41:51
7227 forum posts 21 photos	That was my first thought, but definitely NOT Myford 1 1/8 x 12. threads don't even touch. The register is 1 1/4" and measuring the core dia of the thread and adding twice the thread depth comes out near enough to 1 1/4. Just want them to go to where they would be useful, rather than acting as door stops. Howard

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