ORIGINAL: KodiakArcher
I use a propane torch and have never even melted an insert with that. Get some glue melted on the insert and then heat both the shaft and insert as you push them together. It doesn't take much heat so don't sit there like you're roasting marshmallows.
This is what I had seen (Byron Ferguson video) and probably the way I'll go.
ORIGINAL: KodiakArcher
The thing I really like about aluminum shafts is the ability to heat and tune the insert/broadhead combination to get a perfectly aligned broadhead.
One of the reasons I am going to give these a good looking at.
I like the Carbon Techs I use as they are good quality and consistancy but they just don't give me the weight and spine options I want to fool with. I will continue to use them but do not want to be limited either.