Use a con­tour gauge for can-do du­pli­cates


A con­tour gauge con­tains a row of me­tal or plas­tic pins trapped be­tween two sides. The sides pro­vide just enough fric­tion on the pins to al­low them to slide when pressed, and then hold them in po­si­tion. Press the tips of the pins against an ex­ist­ing pro­file, then hold the gauge against your work-in-progress to see how it com­pares. Gauges come in var­i­ous lengths, but a 6" and a 10" gauge should serve most of your needs. You can buy them at wood­ con­tour­gauges.

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