Along the same lines as the 45° triangle quilting ruler and the small arc quilting ruler, this one has a nonstandard 6-¼ inch diameter semicircle for the pattern Mary designed for a friend’s quilt:
The 4-½ inch diameter semicircle is there because the larger half needed a handle for easier maneuvering. As with workshop clamps, quilters can never have enough rulers, so that curve will come in handy for something.
Unfortunately, I did not mirror-image the layout like this:
Which would make it correct when seen through the acrylic:
Given the very specific use case, I begged forgiveness and was not compelled to get it right.
The LightBurn SVG layout is a GitHub Gist.
The Smell of Molten Projects in the Morning 
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