Primitive Archer

Main Discussion Area => Bows => Topic started by: Mo_coon-catcher on January 11, 2018, 12:31:27 pm

Title: Fixing a split overlay?
Post by: Mo_coon-catcher on January 11, 2018, 12:31:27 pm
I decided to take the chance on the grain orientation for overlays with a small block of leopard wood. And lost that gamble. One split at the grain line on te first bracing with a new string. Part of the problem was a tight fitting string, as the groove is cut with a tile saw blade and is fairly narrow and the string is 10 strand D97 padded with 6 strands of B50 per loop. For now I glued the piece back on with superglue. The best fix is to file it down to a thin shim and glue on a more solid block. But I知 wanting to preserve the look of the leopard wood. I知 thinking about filing a groove around the tip with a triangle file, just below the nock groove, then wrapping with silk thread and superglue.i think it値l still look good and be plenty strong. But I haven稚 done that and am looking for opinions before I do it. Think it値l work?
I was gonna post a pic or two with it, but my normal resizing app is outdated without an update to work the the new phone software.

Thanks,
Kyle
Title: Re: Fixing a split overlay?
Post by: Mo_coon-catcher on January 11, 2018, 01:13:14 pm
https://i.imgur.com/jsyUUCA.jpg,
https://i.imgur.com/GOIeqvh.jpg
https://i.imgur.com/wd1afB1.jpg
If it worked, here are pictures of the nock. I had to wait for the app to update so I could post these.

Kyle
Title: Re: Fixing a split overlay?
Post by: DC on January 11, 2018, 02:11:47 pm
Can't you just rasp it off and make a new one, maybe with the right orientation.
Title: Re: Fixing a split overlay?
Post by: Mo_coon-catcher on January 11, 2018, 02:33:10 pm
I値l probably end up resorting to that. But I値l have to switch to a different material as the piece of leopard wood I have to work with is a 1/4 thick piece. So only one orientation will work. I値l most likely end up rasping it down and flying on a piece of persimmon or something.

Kyle
Title: Re: Fixing a split overlay?
Post by: PatM on January 11, 2018, 02:52:02 pm
You could always double up the overlay.  Also if you angle your flattened  gluing area the string will put less of a direct splitting force on the overlay.
Title: Re: Fixing a split overlay?
Post by: Pat B on January 11, 2018, 06:39:08 pm
What glue did you use? You might be able to heat the overlay enough to degrade the glue.
Title: Re: Fixing a split overlay?
Post by: kbear on January 11, 2018, 07:23:15 pm
Once you have made the repair, perhaps cutting the string groove around into the sides of the limb. You will need to allow for the changing string angle between brace and full draw, but that will take a load of pressure off the overlay when the bow is shot. I have had this happen too. Now I file down the sides, and use horn overlays mostly........
Title: Re: Fixing a split overlay?
Post by: Jim Davis on January 12, 2018, 08:25:26 am
+1 on kbear's suggestion.
Title: Re: Fixing a split overlay?
Post by: PEARL DRUMS/PEARLY/PD/DRUMS on January 12, 2018, 08:29:03 am
I see tip over lays the same way I see my truck tires and my boots. Nothing but the best will work in such an important area. That being said, I'd rasp them off and use proven, quality materials to replace them. Looks and appearance only get you so far in tires, boots and over lays :)

Title: Re: Fixing a split overlay?
Post by: Mo_coon-catcher on January 12, 2018, 05:49:44 pm
I went ahead and rasped then down to 1/16 layers and cut some bacote to glue on top. The bacote has proper grain orientation and will go on with super glue like all other overlays I do.

Kyle
Title: Re: Fixing a split overlay?
Post by: RedBear1313 on January 13, 2018, 09:14:51 am
I've used some wenge for my tips on my current project.

that is a very hard wood.  how about that?

http://www.primitivearcher.com/smf/index.php/topic,62098.msg873625.html#msg873625