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Set-Over Centre

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Raggle:
I'd call this optical and guaranteed vertical punching

http://www.schsm.org/html/marv_klotz_29.html

see the next 2 pages to complete your understanding.

(I still haven't made mine :) )

Ray

wongster:
Cool stuff!  Thanks Ray.

Fergus OMore:
I've just sent what is as near a copy of George Thomas's simple centreing device 'explanation' and drawing as I dare without  infringing copyright.

The device is so simple that there is virtually nothing that I can add.

Can anyone else- add or explain please? :doh:

wongster:
Hi Norman,

I received the jpg of the 2 pages, thanks.  Can't really read it as the jpg is a little too small and when enlarged, the text is to blur to make out any word.

Regards,
Wong

Fergus OMore:
I'm afraid that for reasons of copyright, I am unable to copy. I deliberately only tried to print the drawing.

Simply make a D bit- or don't make one. If you use a bit of .500 round- all you allow for is 0.250 at the edge of the work rather than zero with a centreing device.

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