wood backings from s america

wood backings from s america

taxus bacata
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taxus bacata
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Joined: 22 Nov 2006, 04:45

23 Nov 2006, 03:29 #1

which of these would work as a backing for an ipe longbow:
ipe:
sucupira amarela:
yuyraro:
andubai:
algarrobo:
sucupira preta:
incienso:
jatoba
oak
paraiso
peroba
ybiraro-ro
petiribi
red eucalyptus
guatambu
ash
walnut
Longleaf Pine
white eucalyptus
cedar
muramo
caoba
cyprus
brasilian cedar
alamo
maple
douglas fir
thanx a lot for your answers.
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taxus bacata
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taxus bacata
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Joined: 22 Nov 2006, 04:45

23 Nov 2006, 03:52 #2

forgot some:
beech
chestnut
sycamore
peroba rosa
sapele
angico
alerce equivalent to red wood
boxwood
jacaranda or palisandro
louro
gonzalo alvez
mahogany
imbuia
goiabao
rose wood
thanx again
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Bowman AKA THE HUNTER
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Joined: 19 Mar 2006, 20:17

23 Nov 2006, 04:19 #3

Maple,ash and oak will make backings but I'm not so sure if they are tension strong enough for ipe. Maybe out of the three ash would be the best. I dont know what the others are like so I cant really help you much. They could be strong enough in tension,but I have never heard of these names before. One things for certain though, it would be a good idea to degrease the ipe just in case. Someone more knowledgable than me should show up soon with info.

BowmanThe bow may be bent until it breaks. [Danish Proverb]
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stickbowaddict
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stickbowaddict
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Joined: 02 Mar 2006, 07:34

23 Nov 2006, 17:23 #4

I have more faith in oak than in maple or ash. I would choose a piece with perfect grain, at least 1/8" thick. I once backed a medium piece of osage with oak, and it made a fine longbow.
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Waterlogged
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Waterlogged
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Joined: 11 Jun 2005, 07:06

23 Nov 2006, 20:59 #5

Sorry, I also don't know most of those woods. Is the oak white oak or red oak? You can tell which one it is just from the color. White oak is white and one of the best, in my oppinions, for backing. Red oak, which is pink, less so.

You could always just get small samples of the densest of the woods and do a bend test.

Finally, you could always just try an unbacked Ipe bow. Some people believe it can be done, others don't. The biggest problem is finding one with strait grain, which is half-near impossible with how dense the wood is. I'm not sure if it's a dead end or not, but I have found that when sanded with very rough sandpaper it seems like you can see the grain. Not sure on that, only speculation, but it might have something.

At any rate, good luck, and post any other problems you have. We'll be glad to help
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sagitarius boemorum
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Joined: 26 May 2005, 18:53

23 Nov 2006, 21:16 #6

Had failure with oak, never with ash. Oak has somehow short grain.

But that is only a backing for safety it wont complement the strenght of Ipe well.

I wonder how dificult is to get bamboo in South america?


Jaro
32 down on the Robert McKenzie
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stickbowaddict
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stickbowaddict
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24 Nov 2006, 00:04 #7

red oak

Jaro, all of your ash bows are from staves. This guy is talking about boards. All I am saying is that red oak make a better board backing than ash. With an ash board backing you must follow a ring and preferably use just one thick ring.
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sagitarius boemorum
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Joined: 26 May 2005, 18:53

24 Nov 2006, 00:13 #8

I used quartersawn ash backing on around 250 bows over 6 last years.
I cant think about backing failure on any single of them.
I had couple of glueing problems, but that can be counted on fingers of one hand.


It is actually my cheap foolproof setup, most of these bows went to people who never handled bow before, yet I m having no failures.
Made one today just slaped 1/4 thick slat of ash on another ash plank, presawn to dimensions, glued on my proven former with 1 reflex, tilered, all in about 3 hours, 60 bucks at home....

Are we talking the same wood?


Jaro
32 down on the Robert McKenzie
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Ryano
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Ryano
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Joined: 22 Feb 2006, 04:59

24 Nov 2006, 03:02 #9

Im not a big fan of ash but I have made a few nice bows backed with maple....
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stickbowaddict
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stickbowaddict
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24 Nov 2006, 05:48 #10

Even then I would be more comfortable with a boo backing for ipe. Maybe he should use an ash/oak/maple backing with something a little lighter than ipe. He has some nice lower denstiy candidates in his list.
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Mark in England
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Mark in England
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Joined: 13 Jun 2005, 23:39

24 Nov 2006, 07:04 #11

I am not sure if Massuranduba is on your list. This is known here in the UK as Massuranduraba, Massuranduba, Bulletwood, or Brazilian Redwood. I know that some flight archers in the US have used this with success on flight bows. If it works well on a highly stressed flight bow it should be fine on a less stressed bow. Apparently it has good tension properties. I think they cut it as thin as 1/8th of an inch thick for this.
May be worth trying.
Mark in England
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sagitarius boemorum
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Joined: 26 May 2005, 18:53

24 Nov 2006, 07:57 #12

I said bamboo is the choice for Ipe too. Ash is only protection against splinter lifting, but wont complement Ipe well as the Ipe will stretch it too much.
I made recently wuite nice bulletwood bow with ash backing, but I use thick and hard piece of ash and it was almost 1:1 ash/bulletwood.

I made also Ipe backed with Bulletwood and it works very well and its much easier to get than good hickory. It needs to have good grain, but there is plenty of good grained boards around. It looks like red plastic when thined on the jointer, very uniform, very stiff, it does complement Ipe very fine.
I have this tip from Mark (Thanks!).

Jaro
32 down on the Robert McKenzie
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