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Thread: 51/64" router guide bushing: what for?

  1. #1
    Join Date
    Sep 2019
    Lafayette, CA

    51/64" router guide bushing: what for?

    Here's an odd one. My Woodcraft brass guide bushing set has a 51/64" OD, 5/8" ID size. This size seems to be included in just about every set, based on what I see online, but I cannot find a definitive reference describing how one would use that size. Is it for a hinge mortise jig? Someone here has to know.

  2. #2
    Join Date
    Dec 2008
    I believe that bushing is in there for hinge mortising jigs and using 1/2" tool. Its the proper offset for the jig.
    Sometimes I just want to look at pretty pictures,... Thats when I go to the Turners Forum

  3. #3
    Join Date
    Nov 2009
    Peoria, IL
    Agree with Mark. It's a hold over from the earliest years of guide bushing and router use on job sites. I was thinking maybe a stair tread template too, but can't say for sure.

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