I just 10 min ago tried this (on my buddies arrows) he had them cut at the shop to his draw length but forgot about his overdraw they were too long and of course he came running to me cause I have a high speed arrow cutter. So I cut them down to size then fired up the tourch put field points on all the inserts and heated the inserts with a pair of plyers on each end I pulled out the inserts cleaned them and replaced them in the shorterr arrows. I checked out the cut offs and they looked fine. At no time did the end of the arrow get hit by the flame. So I think if you are careful you can do it. I put the inserts in with hot glue fired the arrows a couple times and everything seems fine. I used hot glue so if there is a problem he can heat the field point and spin the insert like we used to do with alum. arrows Good Luck Mike