I use low strength loc tite. I purchased it for scope rings, and found it works better than the blue "medium strength" for fieldtips. Removal still requires a little heat or strong thumbs, but I've never had one loosen up from shooting. I also keep a insert thread tap in my kit to clean up stubborn inserts. No tackle box should be without one. Or a lighter for that matter.

Fingernail polish

I use o rings for broadheads, get 'em at Lowe's in plumbing dept.  For field points I don't have a problem but thanks for the string wax tip that is cool! Joe

Right wing helical fletch will keep the tips nice and tight........provided you have some string wax on the threads!  

All my arrows are right wing helical fletched and it doesn't help at all.They will be loose in one or two shots if I don't put something on the threads.

Y'all need stronger thumbs!  :D

"Screw Tite" by lock tite. Designed for easy removal but is secure. Just a small dab does it.

What Rob said!! I just grab the shaft back by the fletch and crank the point in place with a pair of pliers. They seem to stay put.

Pair of pliers.

QuoteOriginally posted by woodcock:
I use o rings for broadheads, get 'em at Lowe's in plumbing dept.  For field points I don't have a problem but thanks for the string wax tip that is cool! Joe

I KNEW I forgot sumpin' at Lowe's yesterday!  

string wax...

Wax.

String wax, works great!

Jason

I snip off a small piece of peep-site tubing and crank down on that.  Dont think I've ever had a problem with them loosening up.

Like Rogue Hammer said ... I changed helical on my fletching.  Then I use my fingers to make sure they're tight after pulling from the target. Combination works great!

Fingers

clear nail polish

Hot melt, but can get hard to remove, so may give plain old string wax a try.

A second for what Charlie said!  Ain't that why theres feathers there, to get a grip?   :D

Wax for me too.