Torges patch question

[sleek]

Can a torges belly patch in the working limb be done with only CA glue, or is another glue required? I hinged a limb and have made it deeper a little and a lot longer,  so now I want to laminate a belly slat in place and rwtiller it, tapering it out to a feather.

[Eric Krewson]

I have only done a couple of these patches and used Urac for both. I found that these patches fail over time, one lasted a few months, one lasted a couple of years. Both patches failed with the patch wood developing stress cracks, none of the patches came loose.

[leonwood]

Both CA and fast curing epoxy will probably crack in working areas, I tried both and it did not work. I used smooth on for another and that bow still shoots after thousands of shots

[DC]

I don't think that CA would give you enough clamping time and it tends to be a little brittle.

[Dances with squirrels]

Laminate a belly slat? I thought we were talking about a Torges patch. A Torges patch isn't a slat or lam. We need more details, or pics.

[sleek]

Thanks for the replies, i suppose I will just cut the messed up limb off and save the good one.

[Del the cat]

Thanks for the replies, i suppose I will just cut the messed up limb off and save the good one.

Try a long gently curved patch, it gives more glue area. You have nothing to loose trying if your are thinking of cutting it off anyway.
Del

[bradsmith2010]

the nothing to loose suggestions sounds positive

[Hamish]

Totally agree Del. The Torges style patch is too short, in relation to the depth.  Still need to used the best tried and true glues for saftey, and durability.

[sleek]

From a stress standpoint, you want 25 times longer than deep.

[PatM]

I doubt Dean would be comfortable with this patch being named after him.

[sleek]

Lol, its the idea of the patch he developed, but i am of course, modifying it to fit my circumstances.

[PatM]

I mean he did not develop the patch. He just brought it back to our attention. 

 I think Del mentioned seeing a bow collection from the Victorian era with this type of patch.

[Badger]

From a stress standpoint, you want 25 times longer than deep.

  For a compression patch, you would want more depth and less length, If you had a router that would cut a nice flat spot with square edges you could barely squeeze a patch into it would be better than one that tapered off slowly.

[sleek]

Well, i guess that makes sense. Im used to thinking about tension stresses. But good reference for next time. On this one, im either going to cut and splice a new limb in, or grind the belly down till its real thin, and laminate a new belly on. Honestly,  I really like the idea of a new belly. Alot.