Eagle America makes three coping sleds that work similarly, but this rigid plastic model is the one to buy.
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Its dual-pad adjustable clamp provides better workpiece holding power, and there’s a front guide block for extra support and two easy-to-grip handles. What we like best about this nearly 16"-long sled: It glides smoothly over the insert plate—which always seems to vibrate slightly out of level—in my router table, producing perfect coped ends.