Making Matters: Creating f-hole templates

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Luthier Aubrey K. Alexander gives her method for creating f-hole templates using a CNC machine and Fusion 360 design software

I was initially taught to make outer f-hole templates by tracing the desired outline on to clear template material and removing the interior waste with a knife. Then I would carefully file and sand the walls until an outline drawn with this template matched a reference tracing. While this works, it’s a lot of extra work. To make the most repeatable and easily adjustable templates, I now enlist Fusion 360 software and a CNC router. I learnt these techniques from my mentor Greg Sapp, a pioneer of CAD/CAM in the violin restoration field. Please note this article does not describe a design method; it is just another way of copying an existing f-hole…

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