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If you're planning to use recycled lumber, or harvest your own, you've gotta check it for hidden metal. A submerged nail or screw will ruin a $100 saw blade quicker than you can say "IknewIshouldaspent$20onaLittleWizardmetaldetector!" This
battery-powered unit scans for metal up to 2-1/2 in. below the surface
and signals with LED lights and an audible tone when it finds some.
The business end is only 2-in. wide, so it takes time to check a board
completely. The best way to cover the surface is to establish a grid,
working from end to end, first with the grain, then across. |