Set-up spacers for Lock Miter Bit Setting up a Lock Miter Bit with the GrooveCenter (here  is the page) requires a digital caliper to determine the off-set. This works well but requires three hands!
Set-up spacers for Lock Miter Bit It’s much easier to make small spacers, each for a specific Lock Miter Bit with the exact offset size. Here are the two spacers for the big Freud and the small CMT bits.
Set-up spacers for Lock Miter Bit This is the one for the CMT bit, the Magic Number is 0.600”.
Set-up spacers for Lock Miter Bit And the bigger one for the Freud bit: M =  0.850”.
Set-up spacers for Lock Miter Bit The spacer drops in the track and registers the offset.
Set-up spacers for Lock Miter Bit This works really well!

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