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Author Topic: Bow forms & bamboo!
Cicada
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Hi guys & gals,after reading over 10-12 forum pages and just about every post,i realized the people here really know what they're talking about!!
So many awesome bowyers,im glad i joined up!
I do have 2 questions that i was hoping someone could she some light onto?
First question pertains to bow forms that will end up in the oven with smooth on.What in your opinion is the best grade plywood for this?
Second question had me scratching my head but im sure it's been answered many time here.
Bamboo flooring,i noticed most of it is thin strips edge glued together then sandwiched to make floor panels.Are you just resawing that down at the glue joints making them about .125" thick then sanding them down to finished thickness?
Any help would be greatly appreciated,thx!!!
With Regards, Jessy!

Posts: 11 | From: Canada | Registered: Oct 2017  |  IP: Logged | Report this post to a Moderator
JamesV
Contributor 2013
Member # 23743

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Most horizontal bamboo flooring is laminated in 3 pieces and will//can de-laminate. I always cut out the factory glue joint. With vertical bamboo this isn't a problem.

James

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Proud supporter of Catch a Dream Foundation
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When you are having a bad day always remember: Everyone suffers at their own level.

Posts: 2046 | From: Rolling Fork, Mississippi | Registered: May 2010  |  IP: Logged | Report this post to a Moderator
Bowjunkie
Contributor 2014
Member # 482

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Most any grade of multilayer plywood will work. 1/2 or 3/4" 3 or 4 ply cdx for instance. Ya just buy whatever thicknesses you need to get the width you want then glue and screw them together.

There's no need to buy cabinet grade stuff. Just don't use OSB or MDF chipboard/particleboard. They're tempting because they're nice and smooth and flat, but they don't have the same level of strength that even the cheapest mulitlayer/directional plywoods have and they can break apart when the air hose is inflated... I know this from personal experience.

For my last couple of presses, I've used Microllam LVL beam material. It's strong too and can be bought by the foot at many lumber yards. Heck, sometimes they'll just give me pieces that are too short for home construction use, but are plenty long enough for bow presses. Look for their cutoff pile and ask about them if you see something that will work for ya. They come in a few different widths and I think they're usually about 1 3/4 or 2" thick, but they can be planed to whatever thickness you need. Hope this helps.

Posts: 2388 | From: Pa | Registered: Apr 2003  |  IP: Logged | Report this post to a Moderator
Cicada
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Perfect....I'll look into the LVL for sure.Thanks Bow junkie!
As far as the bamboo is concerned,after separating it into 3 layers there's still glue joints about 1" apart.Is that normal for bamboo?

Posts: 11 | From: Canada | Registered: Oct 2017  |  IP: Logged | Report this post to a Moderator
Cicada
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Almost forgot....thank you JamesV as well.
Posts: 11 | From: Canada | Registered: Oct 2017  |  IP: Logged | Report this post to a Moderator
kennym
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Here is the vertical bamboo, just rip to bow width and slice lams off...

https://www.bing.com/images/search?view=detailV2&ccid=grq1LJKZ&id=FA5C0A7073A59541411BC7E27CF6A39B7295750A&thid=OIP.grq1LJKZaUkzKwaiENKUvQD6D6&q=pic+of+vertical+bamboo+html&simid=6 08012533049526981&selectedIndex=13&ajaxhist=0

Get unfinished , the finish is hard on blades.....

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Stay sharp, Kenny.

https://www.kennysarchery.com/

Posts: 12067 | From: Linneus , Mo. | Registered: Jan 2004  |  IP: Logged | Report this post to a Moderator
Cicada
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Thanks Kenny!
Have you ever used horizontal bamboo?

Posts: 11 | From: Canada | Registered: Oct 2017  |  IP: Logged | Report this post to a Moderator
jess stuart
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I have used plywood, LVL and MDF for forms. I prefer MDF it comes exact in thickness. It also sands to shape very easy. I have three or four MDF forms, a couple have had at least 60 to 75 sets of limbs glued up on them without issue. I did skin them with .375" plywood to give them added strength. Only draw back for me is they are probably a little heavier than a all plywood form, of course I am old weakling LOL.
Posts: 1430 | From: Moriarty , New Mexico | Registered: Jul 2009  |  IP: Logged | Report this post to a Moderator
jess stuart
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Oh I forgot to mention, I am not a fan of bamboo flooring for lams. Much prefer good old hard maple. It has been around forever, other woods and bamboo mauy be as good but, certainly no better. Of course that is only my opinion and your mileage may vary.
Posts: 1430 | From: Moriarty , New Mexico | Registered: Jul 2009  |  IP: Logged | Report this post to a Moderator
Cicada
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Thanks for the input Mr Stuart....I'll take that into consideration upon building my next form.
Posts: 11 | From: Canada | Registered: Oct 2017  |  IP: Logged | Report this post to a Moderator
   

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