THO Game Calls Forums

The Art of Handcrafting Custom Game Calls => Handcrafting Custom Crow Calls => Topic started by: copperheadcalls on April 22, 2016, 10:20:55 AM

Title: "O" rings?
Post by: copperheadcalls on April 22, 2016, 10:20:55 AM

I've never used O rings before, could someone tell me what their function is? And what size to use on a 5/8" turning?
Thank you
Robert

Title: Re: "O" rings?
Post by: Jeff @ Mutt Calls on April 22, 2016, 12:22:30 PM

O-rings are used on the guts to hold them together in the bore.  I believe there is a tutorial called the "Latta Method" for doing this.  The O-rings sort of eliminate the friction fit.  Additionally, for a 5/8" tenon, I believe the O-ring you're looking for is #111.

Mutt

Title: Re: "O" rings?
Post by: Al_at_THO Game Calls on April 22, 2016, 02:50:33 PM

The general rule of thumb for O rings is to use an O ring 1/16" in diameter less than your tennon.

The O rings should be 1/16" thick as well.

So, for a 5/8" tennon, you would use an O ring that is 9/16" in diameter and 1/16 thick.   

O rings are normally sized by SAE number, so for a 5/8" tennon you would want an SAE 013 O ring.

The o rings you buy at the big box store are Bunna O rings.   They are horribly over priced and do not hold up well.   For calls, you really want to use a Neoprene O ring.  They last longer, and have greater resistance to chemicals and heat and cold.

We stock them in the forum store.  Just click the banner below.

Al @ THO Game Calls

Title: Re: "O" rings?
Post by: copperheadcalls on April 27, 2016, 03:34:52 PM

Thanks Al, Jeff for the info. Will be trying it out soon.

Robert