HELP-Bow eating strings!!

[pronghorn23]

I leave for a trip out west in less than a week and am in panic mode.

My bow has been eating strings up. I've gone through two strings in less than two and a half months. The latest string probably only last a couple hundred shots.
They're B-50 strings and somewhere at the top nock is rubbing and cutting them. I've sanded sharp areas that developed and I thought were the problem and now it's just as bad.

Any suggestions are appreciated. I have to order two new strings, get them overnighted and stretched in a week.

All summer I've been shooting probably the best I ever have and now this.

I'm just a little bit peeved...

Thank you for any suggestions.

[Bjorn]

You obviously know that still have a sharp edge that is cutting up your loops. Run your fingers along everywhere and sand those edges smooth.
Didja' examine the latest string to find where that edge might be?
Might there be a contact with a sharp edge when you string and unstring?

[magnus]

Run an old panty hose around the tip that should catch any sharp edge. Just a thought. Good luck.

Keeping the Faith
Magnus

[Dave Bulla]

Another thought...

Fiberglass itself is a bit abrasive.  If you sanded the string groove and left it bare thinking you might have to sand some more, it might be rough enough that it is "sanding" your string.  I'd sand it again with the finest paper you have, 600 grit or finer, and then spray a coat or two of clear over it and let it dry well and try it again.

Also, look very closely if you have multiple tip overlays.  Possibly, if one of the layers was just barely cut through when the groove was filed and if the glue joint there is bad, maybe there is an edge that is moving when under tension at full draw and sort of opens up and pinches the string?  A drop of thin super glue allowed to wick into the cracks and then clamped should help for that.

Lastly, are you making your own strings?  Any chance you are doing something wrong like getting more tension in one bundle than the other?  That would put the entire load on one half of the bundle an might cause it to start giving out pretty quickly.  I'd think it would be pretty obvious if it was uneven but I'm just throwing out ideas in the off chance it might help.

[Molson]

Wrap the loops on the string you have with serving.  You could just wrap the area that's wearing.  It will at least get you by for your hunt.

[Charlie Lamb]

It's better to fix the problem of course and that's been covered well. In the mean time you can do a temporary fix by wrapping the nock carefully with moleskin. It won't affect the way the string sits in the groove and will protect it from whatever is fraying the loop.

[bigiron]

what kind of bow are we talking about? longbow, recurve, & brand.