Learn how to cut dadoes that fit your workpiece perfectly. The Rockler Perfect Fit Dado Jig lets you rout precise dados and grooves at any increment from 1/4'' to 1'' wide. Since it uses a scrap of your actual material for setup, the fit is spot-on, every time. Just rout the first shoulder with the jig in the ''closed'' position, then rout the second shoulder with the jig in the ''open'' position. The result is a tailor-cut dado that fits like no other. No need to buy undersized plywood bits, or bits for other odd thicknesses—your dados can fit any thickness within the range (19/64'' for example) using standard 1/4'', 3/8'' or 1/2'' straight bits.
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