I posted this response on Archery talk but figured I'd post it here to.

Isn't the main purpose of the G5 to square the end of the insert so that the broadhead/field tip square with the shaft?

Obviously, if you are using HIT inserts youneed tosquare the end of the shaft. But for all other arrows it really does not matter if the end of the shaft is not square by the small amount.The insert will square with the inside of the shaft, not the end. however, the broadhead/field tip needs to be square with the shaft.

None ofhome madetools address this issue.The bigger problem I see is that they can possibly fray the carbon at the end ruining the shaft if not done properly. With the G5 that is not an issue.