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· Premium Member
Retired since June 2000
15,066 Posts
The first thing to do is select the size of bit and dia of template guide that you intend to use. The simple formula for making the template is; template guide dia. minus bit dia. plus the size of the inlay.
Let us say you intend using a 1/2" bit and a 3/4" template guide, then we have:
3/4"-1/2"+5"=5.5" 3/4"-1/2"+7" =7.5". That is a template with a rectangular opening measuring 5.5" x 7.5"
The simple way to make such a template that is accurate is shown in the photograph, four pieces cut so as to leave a cut-out of appropriate size.


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