Using a fixture plate precision hole pattern to locate irregular shapes.

https://youtu.be/PELCV5JwcYY?si=kRHr3Duuq45t8Z4m

This part is asymmetric, with no straight edges for reference points. The challenge is to cut a pocket, 1.5mm deep, exactly 12mm in from the perimeter.
To solve this, I first created a template. That let me work out three reliable locating points around the perimeter. I then marked three holes to give a repeatable position for the part. In CAD, I overlaid the part shape, making sure the perimeter touched all three pins. That setup will make programming the pocket much easier later on. Programming the pocket used dimensions from the CAD file using the centre hole as a datum.

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Thanks Mook! We've added your Irregular Shape Pocket Cutting Method to our Machining category,
as well as to your builder page: Mook's Homemade Tools. Your receipt:

<div id="blocks"> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="https://www.homemadetools.net/homemade-irregular-shape-pocket-cutting-method"> <img src="/uploads/276402/homemade-irregular-shape-pocket-cutting-method.jpeg"/> </a> </div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="https://www.homemadetools.net/homemade-irregular-shape-pocket-cutting-method">Irregular Shape Pocket Cutting Method</a> <span> by <a href="https://www.homemadetools.net/builder/Mook">Mook</a></span> </div> <div class="tags">tags: <a href='https://www.homemadetools.net/tag/fixture'>fixture</a>, <a href='https://www.homemadetools.net/tag/cad'>CAD</a> </div> </div> </div> </div>
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