I have used hot melt before on tuning carbons,but now I tune with using saran wrap.Saran wrap is quick and easy to use when tuning,no waiting for epoxy to dry and no heat needed.I can get my tuning done without having to use any heat.My preferred method of tuning now.I know alot have used hot melt,I have myself but there is not a carbon arrow manufacturer out there that recommends using any heat at all.