bigzombee69,

The squaring has purpose on outserts as well as inserts. I'm not sure how you would do outserts.

I'm not sure how the ASD would work on outserts. The arrow rests on 2 places on the ASD.3/8" from end of insert/outsert and then a few inches down the shaft

If the outsert is larger than the arrow shaft itself the arrow would not rest on the bottom of the tool and therefore would not be square with the shaft.