New Trilam, failure is sometimes inevitable.

[John Malone]

Ok guys, gonna try again. Hickory backing, red elm core, hickory belly. My backing came out to 3/32nds so I mad the belly a lil thicker than a 1/4 (11/32nds). Ive decided I will make one of these darn things or die trying, its personal now. Don't know about the belly being that thick but what the hell lets see what happens.

[Roy from Pa]

Looks nice..

Wish you luck Johnny.

You should alternate the clamps every other one reversed.

But heck it's not my bow..

 

[John Malone]

Pressure strip is to wide, that's the only way I can get the clamp centered. Hasn't caused a problem before, ya just have to make sure it doesn't twist anywhere.
 I don't believe in luck by the way, you can wish me free beer, that would be cool.

[Roy from Pa]

I'll send ya a PBR...

 

[John Malone]

Cool, I like Pabst.

[John Malone]

Well it came out of the form nice and even. In the center it is .620 at the end of the fade its .595 and .490 at the tips. With 27.5 from end of fade to tips that's a taper of .000381818. I have no idea what the hell that means but we will find out.

[Roy from Pa]

Didn't happen wifout pichers...

[John Malone]

Happy now.

[John Malone]

Looking at the belly it will most likely blow up. I cant win for loosing fellows.

[John Malone]

This wasn't there before glue up? Maybe I can put some unibond in there? It stops an inch or so before the limb starts to taper, which is 6 inches from the fade.

[BMorv]

Cracks the length of the bow aren't necessarily the end of the bow.  I had those show up on a couple different bows.  I would say they are checks that were deep in the wood and came out when it was stressed in the form.  It doesn't look too bad to me.  Maybe someone with more experience with them can chime in, but the couple ones I've encountered didn't affect the bow.

[John Malone]

Thanks Ben, I feel better now. Gonna try it anyway. Should I fill it with some unibond when I glue the riser on, or use super glue?

[John Malone]

I saw Roy looking, but he left without saying a thing. 

[BMorv]

Now that I think about it, both times I had those were when I used an osage belly.  I bet Roy has seen those with as much as he uses osage on his tri lams. 
Unibond would be more for aesthetics, super glue would be your best bet a stopping the crack from propagating. 

[Roy from Pa]

I'd fill it and go for it.

I'd use super glue also.

[John Malone]

OK. I've read about super glue a lot, I'm more of the duct tape and coat hanger type but I can try new things.

[BMorv]

CA glue has a particular property that makes is useful in bow building.  It can fit in tiny cracks were other glues can't.   
Unibond is a gap filling glue and wouldn't get to the end or beginning of a crack where the glue it needed the most.

[John Malone]

That's what I thought, so I should put it in there until its full, multiple applications. That's what I've read anyhow.

[Forwardhandle]

The real thin water like CA works great for crack filling I have had cracks like that before on sinew bows ! I never made a wood tri lam but those length wise cracks most times are a non issue on other wood bows other then esthetics !

[John Malone]

All i have on hand is gel, I know that want work, have to get to town to get the right stuff. Saturday maybe.
Thanks guys.