polyhole size test, mm, inch, aligned, and customizable

thingiverse

This takes Nophead's https://www.thingiverse.com/thing:6118 and moves and rotates the polyholes so their flats align on the centerline of the part. If everything is dialed in, then the holes should be on size, and the flats should align perfectly on the centerline. Inaccuracies in placing the interior walls will show up as the polyhole flats not being on the centerline, and the measurement to alternate sides differing. Normal polyholes keep their points aligned along an axis, but since polyholes have either an even or odd number of sides, controlling the location of the side flat depends on the size. Since the point of polyholes is to avoid the points, this polyhole routine aligns the flats along an axis so I can reliably position the flats on the centerline. The part is also customizable for millimeters or inches, depending on the gauges you have.