Cleaning up dado in plywood


shuflid

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It all comes down to your definition of 'just a hair'...

 

As PB says, it's far easier to thin the panel than widen the dado... Attempting to widen a dado usually leaves you with a bigger problem then what you started with...

 

If the panel is solid stock, the preferred method is to thin it with a smoothing plane, drum sander, etc.

 

If the panel is plywood, we're back to how much is 'just a hair'. If it's a thou or five, then sanding is fine. More than about 15thou, you should be taking stock equally from on both sides. Around 20thou, and it depends on the quality of the plywood how you plan to finish the piece…

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