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One piece of my weaving loom is a long, octagonal cylinder. I need to put in a lengthwise groove to hold a rectangular stick, but which face should be routed? The grain is oriented differently in different faces.
In use, the stick will be pulled tightly against one wall of the groove, so strength is as important as a clean cut. The attached drawing shows the beam in cross-section, and the arrows show the direction of pull. Which is the better location for the groove, A or B?