ADJUSTING NOCK TENSION

[Yolla Bolly]

I have been filing plastic nocks with a chain-saw chain file and/or an emory board to get the nock-to-string fit I want.  Is a rather slow and imprecise process.  Also, I notice that the fit tends to loosen over the life of a string, requiring pinching the nocks to compensate.
Has anyone come up with a better "system"?
 I have a caliper that measures the string /serving diameter, but when I try to measure the inside dimension of the nock, I get inconsistent readings.  Any help?
Thanks.

[Bladepeek]

I just heat them in hot water and pinch down on a brass rod approx the same diameter as the serving.

[Yolla Bolly]

Interesting, Bladepeek.  Brass rods from a hardware store or hobby store?  Water boiling or ?  Thanks.

[JRY309]

I make my own strings so I serve my strings for fit.I like to get my finished serving diameter to be around .108 to .110 for my nocks.For my standard 5/16" carbons I use Easton 3D Super nocks,they have a .098 throat.The 3D Super nocks have a larger and deeper throat then the standard Easton Super nocks.They are a S-type nock and work in GT,Beman ICS,Blackhawk Vapor's,CE Heritage 150 on up,aluminum with uni-bushings 20XX and larger.I also use on some arrows a Easton large groove G-nock with a .098 throat.I use to sand my nocks to fit but is time consuming and inconsistent.I prefer not to modify my nocks and just serve to fit.Their are a lot of different diameter servings you can buy these days.

[awbowman]

I use boiling water ...... leave the nock in for 20 - 30 seconds ..... then place it on the serving at the nock ,,,,,, twist the nock slightly to get it just a little tight and go hunt

[Yolla Bolly]

'Thanks all---will give it a try.

[hvyhitter]

My solution is to use the same nock brand/size for all my arrows, bhning signature 5/16 for glue on and easton 3d for unis.............then serve string to fit. Arrows Ive made 5 years ago fit the same as any I build this week.............

[bofish-IL]

I have found the file on my Leatherman tool will fit in the nock tight and just a few push & pull will file the nock out to a perfect size for my string.

[Bladepeek]

Yolla Bolly, sorry I'm a bit late. Yes, I use boiling or nearly boiling water and I use the brass rod because I have them in various sizes for my knifemaking. A wooden skewer would work just fine or maybe a wife's knitting needle. Anything that is the same size as your serving or just a smidge (scientific term for hardly measurable) smaller.

[Paul_R]

I just use my teeth. Bite or pry depending on which direction I need to go. I like just enough hold so they stay on the string when pointed down but fall free when I tap the string. All my strings are 8 strand SBD's with the exact same dia serving so I only need to set 'em once. I'm sure I'm breaking some rule by doing this but I'm stubborn in my old age...  

[Orion]

Though boiling and filing work, they weaken the nock, IMO.  I just reserve the string to get the proper nock fit.

[Bowwild]

The next time I have custom strings made I'll send the nock of the arrow I use to get the fit just right.

This is something I don't worry too much about as long as the nock isn't so loose as to risk a dry-fire.

[longbow fanatic 1]

I just replaced my nocks with new ones. It beats having a nock fail on you when you fire a shot. For my set-up, Marco nocks are the the best.

[LBR]

Serve the string to fit the nock.

[Yolla Bolly]

Thanks for the help, y'all

[Easykeeper]

I just reserve the string so the nocks fit.  Or if I'm lucky I can use the other of the two available g-nock sizes.