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    Simple Method for Squaring a Case





    If you're a budding woodworker, you know the importance of measuring a case--be it a cabinet, box, drawer, whatever--for square. During the glue-up phase, most folks reach for their tape measure to ensure that the diaganol measurements (corner to corner) of square glue-ups are equal. Equal measurements mean the case is square--unequal measurements mean the case is out of square.

    Trouble is, using a tape measure for this maneuver can sometimes lead to poor measurements. Instead, try using two sticks and a couple of spring clamps. The process is simple. Bring the sticks together and then slide them out to extend into the corners along the first axis, and then spring clamp the two pieces together. Next, use that clamped assembly to check the other axis. If it fits right in from corner to corner, your measurements are equal and you can rest easy. No need to read a tape.

    Here's a tip, make two 45-degree cuts on one end of each stick, thus forming a sort of spear point. These points will extend right into your case's corners for a dead-accurate measurement. Couldn't be easier!

    Tools of the Trade
    All you need for this technique are two narrow pieces of stock and a pair of spring clamps. Notice how the ends of my sticks are cut to a 45-degree angle.
    First Measurement
    Extend the two pieces into the corners and clamp them into place.
    Final Measurement
    Now take that clamped assembly out and use it to check the measurement on the second axis. Couldn't be easier!

    Ed_Pirnik