myford big bore thread

myford big bore thread

This topic has 3 replies, 2 voices, and was last updated 11 September 2023 at 10:02 by andrew davies 3.

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11 September 2023 at 09:27 #659826
andrew davies 3
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@andrewdavies3
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
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11 September 2023 at 09:27 #16470
andrew davies 3
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@andrewdavies3
11 September 2023 at 09:57 #659832
JasonB
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@jasonb
It's a metric profile so 60deg

Myself I don't angle the top slide but 29.5deg if you do
11 September 2023 at 10:02 #659834
andrew davies 3
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@andrewdavies3
Thanks jason
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