I asked a similar question this past weekend. Most of the responses I got were similar to Bhunter32's. I went to the local hardware store and bought a 24hr drying 2-part Epoxy made by Loctite. Every indication I have so far says that the stuff works great. Have yet to have an insert come out. The nice thing about slower drying epoxy is, you have roughly 4 to 8 hours of time before it sets to check the heads for wobble. Once your satisfied, stand the arrows on nock end to allow them to dry.

I scuffed the inside with my .22 wire brush. Cleaned away the dust with a cotton swab. BTW, don't use rubbing alcohol since it contains oils that will hinder the adhesiveness. I spread some epoxy in the shaft with a toothpick. Next I pushed the insert in a little more than halfway while turing it. I spread a little bit more expoxy on the remaining exposed portion of the insert. Then I pushed it the rest of the way in and turned it a few times. Immediately wiped up any spilt epoxy.

One thing I did was, screw my broadheads with their practice blades onto the inserts. This allowed me to both use the broadhead to push the insert in and line up my blades with the vanes. I numbered my arrows as well as the broadhead so I know which head properly fits onto which arrow. A little anal, I know but it gives me piece of mind.

-Mike