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post #1 of 4 (permalink) Old 11-01-2017, 08:03 AM Thread Starter
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Default PC guide bushings

Why do the PC guide bushing sets always have a 51/64 OD bushing., and not, for example a 7/8 inch OD bushing?

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post #2 of 4 (permalink) Old 11-01-2017, 09:14 AM
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I believe that the 51/64" guide is used for the P-C Hinge Mortising Jig.
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post #3 of 4 (permalink) Old 11-01-2017, 10:59 AM
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Thanks. I've always wondered that too.

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post #4 of 4 (permalink) Old 11-01-2017, 01:17 PM Thread Starter
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Quote:
Originally Posted by tomp913 View Post
I believe that the 51/64" guide is used for the P-C Hinge Mortising Jig.

Thanks very much @tomp913 . That makes sense for why there is a 51/64 but does not explain the absence of a 7/8 in OD. I looked up PC hinge mortising jigs and saw mention of the need for such a guide bushing however.
It is 20.24 mm, a little to far from 20 mm for tight fitting joints, etc,
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"Teach your children what we have taught ours, that the earth is our mother. Whatever befalls the earth befalls the sons of the earth. The earth does not belong to man; man belongs to the earth. Man did not weave the web of life; he is merely a strand in it. We do not inherit the earth from our ancestors; we borrow it from our children."
-attributed to Chief Seattle of the Native American Suquamish Tribe
  • Wood working, especially router work is too much fun to let "disabilities" get in the way.
  • see MEBCWD's signature line; be certain brain is properly powered up and engaged
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