There are a couple of ways to do this. One way is to wrap the insert with the teflon tape you use to seal PVC threads. I use the same hot melt they use on aluminum arrow inserts to install my carbon inserts, because it works fine and allows me to change my mind later if I want to. So I've kind of gravitated to putting a small dab of hot melt on the inserts in my bare shafts, which is a little more secure than the teflon tape. Lost too many inserts in targets. When you want to change the insert or trim a little off the carbon shaft, you just hold the end of the shaft with a field point installed in boiling water for 15-20 seconds and it pulls right out.