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myford big bore thread

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andrew davies 311/09/2023 09:27:59
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I am looking to make some slave chucks for a myford big bore and i have found that its a 42.5mm x 2mm thread. I can cut a 2mm thread changing the gear to 34T and using 18 setting on the gearbox. My main question or anything else you could help with is what angle would i be best to use (55 or 60) and what angle for the compound.

Many Thanks

Andy

JasonB11/09/2023 09:57:11
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It's a metric profile so 60deg

Myself I don't angle the top slide but 29.5deg if you do

andrew davies 311/09/2023 10:02:48
2 forum posts

Thanks jason

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