Here's a crude sketch showing a 45-degree M&T joint with the shape of the tenon in dotted lines. The circle is the hole drilled through the mortised piece. Should the hole in the tenon be offset to draw the tenon in the direction of the arrow marked 1 (parallel to the right side of the tenon) or in the direction of arrown marked 2 (parallel to the left side of the tenon)? I'm thinking 2.

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