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If you do decide to go with a wedge I personally like to use either contrasting (color) wood or lead wedge with wood scales.

Integral scales sound good too and that is something I have not done...

For scales your wood needs to be no more than 3 mm (1/8') thick to allow for sanding, etc. The best way would be to plane the wood if you have access to a planer. If not you might try ripping it with...