Author Topic: Bamboo  (Read 645 times)

Offline Wolftrail

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Bamboo
« on: August 31, 2016, 10:57:00 PM »
I know lots use Bamboo on the back of bows.  Seriously it must be just as tough as woven fiber glass. Does Boo stretch at all using it as a backing..?

Offline mikkekeswick

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Re: Bamboo
« Reply #1 on: September 01, 2016, 01:57:00 AM »
No it definitely isn't as tough as fiberglass! If it didn't stretch your bow wouldn't bend!
It is a great backing but you need to learn how best to use it. Most people use Moso bamboo due to how it grows. Most varities can be used if you get a big enough piece. Tonkin is good if you can find it too but is best kept for all boo laminated bows or backing very dense tropicals.

Offline Wolftrail

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Re: Bamboo
« Reply #2 on: September 01, 2016, 02:33:00 PM »
I glued the glass backing on with TB3 not epoxy.  TB3 has give not epoxy. I have glued it on with G-2 in the past and yes it does not work to well.

I have to try out different things to satisfy my own curiosity that is the only way I learn .

Other have used glass backing with success, so I leave it there.

Offline PEARL DRUMS

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Re: Bamboo
« Reply #3 on: September 01, 2016, 03:28:00 PM »
I like it a lot as a backing. It can be unpredictable because often times bad boo isn't easy to spot like poor grain on wood backings can be. I like that it weighs almost nothing. But like Mike said, it doesn't hold a candle to fiberglass. I wont use TB3 on backings very often, it can slip on a guy. I use an epoxy.

Online Roy from Pa

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Re: Bamboo
« Reply #4 on: September 01, 2016, 03:54:00 PM »
I have built about 50 boo backed bows the past 15 years. I have friends that come to my shop and make boo backed bows. About 20 at least. All I used was urac glue, then it went away and now all I use is unibond 800. It's actually the same material. I used to use moso bamboo, 90% of the failures on my bows was the moso splintering up. Now I buy bamboo from a place in Florida,  called beautifulbamboo.com

I buy a boo called Madake, pronounced ma-dakie. I buy whole boo poles for about 35 bucks plus shipping. I'll get 4 to 5 boo backings out of one pole. Amounts to about 10 bucks a backing. Dirt cheap compared to what a lot of suppliers are  charging. I've had bows break with the Madake backing on them, but the boo backing never even splintered up. That alone made me a believer.

Online Roy from Pa

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Re: Bamboo
« Reply #5 on: September 01, 2016, 04:07:00 PM »
I don't really care what anyone else uses for glue ups. But TB3 or anything else close to that does not trip my trigger.

Offline J.F. Miller

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Re: Bamboo
« Reply #6 on: September 01, 2016, 04:52:00 PM »
bamboo certainly is not fiberglass, but aside from a good sinew backing, quality bamboo backing is superior to every other natural backing material. notice I said "quality bamboo backing". the overall quality of Moso imported from China, which is what you will get from anyplace that sells bamboo flats for bow backing, has been in decline in recent years because of the rising global demand for timber bamboo species for other uses, and for that reason, I would not trust it to do the kind of tension work I require on shorter, heavier weight hunting bows. I have not bought imported bamboo for ten years or so, but instead buying green and kiln dried Madake (and some Moso) poles grown in Florida and Georgia for several years now. it's affordable, I control the drying, and I know what I'm actually getting. I've made about two dozen bows with this bamboo, and have not had a single issue. I just acquired some more Moso and Blue Hennon from Mississippi cut by a friend of mine while he was on a trip down south. both of these are purely experimental at this point, but by all outward appearances will make superb backing material once dry. The point is, you can get quality bamboo grown in the southern U.S. without rolling the dice.
"It is easier to fool people than to convince them they have been fooled." Mark Twain

Online Roy from Pa

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Re: Bamboo
« Reply #7 on: September 01, 2016, 05:11:00 PM »
Well stated Mr. MILLER....  :)
And thanks for turning me onto the Madake...

Offline Wolftrail

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Re: Bamboo
« Reply #8 on: September 01, 2016, 07:48:00 PM »
Thanks for the input.  Gotta get some of that unibond 800,  for sure.        :cool:

Offline Eric Krewson

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Re: Bamboo
« Reply #9 on: September 01, 2016, 08:10:00 PM »
I have been using Giant Timber bamboo for years, mainly because a guy has a patch across town and sells it to me really cheaply. No failures since I quit aggressively scraping the rind off.

Offline Bowjunkie

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Re: Bamboo
« Reply #10 on: September 02, 2016, 08:23:00 PM »
Yeah, ol' Roy was an aggressive rind and node remover and I suspect that's the main reason he was having boo issues. We discussed it   :)    I've made a pile of moso backed bows, short, stressed, 60-70 lbs and only had issues with just a couple pieces of boo... and I'll bet it was my fault. I would like to try some madake though sometime just because. But if I fell in love with it, what would i do with all this moso? Grind it into lams? I have a bunch and just ordered another 25 pieces @ $5 a piece.

Honestly, I can't complain about the bamboo I've gotten over the years... and I think I've got each bundle from a different supplier.

Online Roy from Pa

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Re: Bamboo
« Reply #11 on: September 03, 2016, 07:05:00 AM »
Come and visit, Jeff. I'll give you a Madake backing. You will notice the difference..

Offline Bowjunkie

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Re: Bamboo
« Reply #12 on: September 03, 2016, 07:14:00 AM »
Cool. I'll get back down there one of these days and bring stuff to trade with.

Offline Eric Krewson

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Re: Bamboo
« Reply #13 on: September 03, 2016, 09:41:00 AM »
Well, I looked it up, Madake is Giant Timber bamboo, perhaps this is why I like the stuff I have been using for the last 15 years so much.

Offline Eric Krewson

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Re: Bamboo
« Reply #14 on: September 03, 2016, 09:48:00 AM »
I haven't bought any in a while, I think I paid about $30 for my last, two full trunks if I remember correctly. Wide node spacing makes it easy to orientate on a bow. Seems like I got about 20-25 backings out of this pile.

   

Online Roy from Pa

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Re: Bamboo
« Reply #15 on: September 03, 2016, 11:24:00 AM »
Yup Eric, that's IT.. I normally get at least 4 to 5 backings out of one pole. I bought these kiln dried, they were much darker when I got them a year ago. There is a split out and prepped backing on the right side in the picture.

 

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