Author Topic: Last Question before Starting  (Read 210 times)

Offline UnderControl16

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Last Question before Starting
« on: May 19, 2012, 08:28:00 PM »
Hello everyone,

I currently have Hickory, White Pine, and Hard Mable lumber that I am going to be making into laminations. I was thinking .15 Hickory back, with .125 pine core, and a .125 hard maple belly for a reflex/deflex. Would that work? There would be no glass.

Also asides from smooth-on what other types of glue can you use to glue lams together?

Thanks everyone for your help,

Mo

Offline PEARL DRUMS

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Re: Last Question before Starting
« Reply #1 on: May 19, 2012, 08:57:00 PM »
White pine?

Offline 4est trekker

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Re: Last Question before Starting
« Reply #2 on: May 19, 2012, 09:10:00 PM »
I would not using white pine for any portion of the bow...it poses several problems to bowmaking, even when used a core wood.  Most people assume that a core is always isolated.  Yet, most cores will do some work, either in tension or compression, depending upon where the neutral plane lies.

If this is your first bow, I would recommend you forgo a tri-lam deflex/reflex is favor of a design that allows for a larger margin of error.  Perhaps a hickory-backed hard maple pyramid bow, for example.  If this is not your first bow and you're confident in your tillering skills, then replace the white pine core with another lamination of hard maple.  Also, it's generally more successful to tiller a deflex/reflex bow by starting at the tips and working your way toward the fades.  

Regarding glue...I prefer URAC 185, as it has some gap filling properties and can be cured at either room temp or in a hot box.  I've used Titebond III, but you have to have perfectly mated surfaces for it to perform correctly.

Hope that helps some!  :)
"Walk softly...and carry a bent stick."

"And whatever you do, whether in word or deed, do it all in the name of the Lord Jesus Christ, giving thanks to God the Father through him."  Col. 3:17

Offline UnderControl16

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Re: Last Question before Starting
« Reply #3 on: May 20, 2012, 08:44:00 PM »
Sorry guys I meant white oak. sounds a little bit better then white pine doesn't it.

I have been building board bows and selfbows for a handful of years now so I figured it was time I try something new.

Thanks for the tip to start from the outside and work my way in. Thats great advice.

Where can you get URAC 185?

Offline macbow

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Re: Last Question before Starting
« Reply #4 on: May 21, 2012, 10:25:00 AM »
Several of the sponsors sell Urac-185. 3 rivers being one.
Easy to use, I like to mix by weight.
Ron
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