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After several careful measurements, I first counterbored the original hole to
the depth necessary to let the shank of the new bolt pass up into the fixed jaw.

The original counterbore, by the way, was done with a conventional drill- as in,
producing a tapered seat, rather than a flats seat for the bottom of the bolt head.
Cheap, quick and barely functional. Basically the motto of these import tools.





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Information contained in these pages is for reference and entertainment purposes only.  Our methods are not always the best,
quickest, safest, or even the correct ones. It's up to you to know how to use your own machines and tools.
Keep your fingers away from the spinny blades o' death and you should be all right.