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Bolt circle without DRO

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D.A.Godley21/03/2021 22:11:51
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You could do worse than look up “ theoreticalmachinist.com , it’s packed with information

SillyOldDuffer22/03/2021 08:47:56
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Posted by D.A.Godley on 21/03/2021 22:11:51:

You could do worse than look up “ theoreticalmachinist.com , it’s packed with information

Just a general observation on the cussedness of things, I have three books with Chord Tables and none of them mentions PCD or Circle Spacing in the index. You have to know to look for 'chords', which isn't exactly user-friendly!

Tubal Cain's excellent 'Model Engineer's Handbook', 3rd Edn is guilty of this, but the book covers the maths behind chords rather well and provides a Circle Spacing Table on pages 2.34 / 2.35. It's another reason to buy a copy!

Dave

Michael Gilligan22/03/2021 08:57:20
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20182 forum posts
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Posted by D.A.Godley on 21/03/2021 22:11:51:

You could do worse than look up “ theoreticalmachinist.com , it’s packed with information

.

Thanks for the reference D.A.G.

... Particularly relevant, and well-presented, being this page: **LINK**

http://theoreticalmachinist.com/BoltCircleCalc

MichaelG.

Nicholas Farr22/03/2021 10:22:48
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3360 forum posts
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Posted by D.A.Godley on 21/03/2021 22:11:51:

You could do worse than look up “ theoreticalmachinist.com , it’s packed with information

Hi, yes this looks like it is good to use with my mini mill, which I have those readout bars with the remote display that Arc Euro sells.

Regards Nick.

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