Primitive Archer
Main Discussion Area => Bows => Topic started by: Bamboo-Bows on September 24, 2020, 01:04:15 am
-
Hi there,
I have been searching for some alternative woods for belly pieces of bows. Flatbows, longbow. Most common are lemonwood, greenheart, ipé, osage or yew. What other woods can be used as a belly piece? Is there some alternative that is not tropical hardwood?
Thanks! (SH)
-
There are plenty of woods, but it's always a matter of availability and suitability, some are better than others, but that's no help if you can't get them.
Experiment with what is available, and make a bow style that suits the wood.
Del
-
I agree with Del.
-
Some people have used bamboo as a belly. dont know what kind so i dont know it you'd consider it tropical or not.
-
White elm can handle stressed designs...within reason...being interlocked .
-
There was a guy in BC that used Greenheart for bows in late 1990's. He claimed it was better than Ipe
As to your question, BL, Hard Maple, HHB all make very good hard backed bows. Anything that will make a good selfbow will also make a good backed bow
-
I have been wanting to expand my bamboo backed bows into some different belly woods because we have a really nice hardwood lumberyard here that sells lots of different tropical woods. I tried sapele....but apparently I accidentally got sapwood and it was a total failure. I'd be happy to hear some woods other than ipe that I should try.
I have used hickory and maple for years to make bamboo backed bows and they're both pretty bullet proof and straight forward. Certainly the hickory is crazy durable, but the maple tends to shoot better in my humid summers. If you haven't used hard maple for a bamboo backed bow, I'd definitely recommend it. I feel like it might be the best combo for bamboo of the easily available hardwoods.
Matt
-
I used hophornbeam on a few and it worked good.
-
Like Matt I also have a local specialty lumber Store that offers almost any wood desired. I have mainly stuck with local lumbers for belly woods because of their low cost.
I have tried osage, black locust, hickory, white oak, American elm and Red cedar with bamboo/maple/hickory backings. My experience with each belly material varies, but I do know that some belly woods vary in quality from board to board. I bought a piece of elm that was a real turd as well as a piece of light density black locust that simply collapsed in the longbow design I was trying. So I can not make accurate judgements on some materials that I have only built a few bows from. I can say that osage is consistently excellent and good quality black locust makes excellent bows as well.
my future list of builds contains more backed ERC bows as well as giving yellowheart a try. The world of building laminated woods is never ending, there seems to always be some new combo worth trying.
Enjoy,
Taylor
-
Does belly wood have to be able to bend on it's own. If, for example, you have a wood the snaps like a match stick would that eliminate it from the bellywood category or does the backing protect it?
-
Does belly wood have to be able to bend on it's own. If, for example, you have a wood the snaps like a match stick would that eliminate it from the bellywood category or does the backing protect it?
I'd think the backing protects it. It only needs to be good in compression.
Del
-
Does belly wood have to be able to bend on it's own. If, for example, you have a wood the snaps like a match stick would that eliminate it from the bellywood category or does the backing protect it?
I'd think the backing protects it. It only needs to be good in compression.
Del
First a disclaimer: I’m new to bow building. That out of the way, I don’t think it’s quite that simple. The issue has to do with thickness. If the backing and the belly are exactly the same thickness then I think this is true. But as I understand it most backings are thinner than belly woods. Which means that a portion of the belly wood also comes under tension. Someone please correct me if I am wrong, I too am trying to understand the physics of this...
-
Not with a hard backing. Yes with a soft backing, depending on thickness.
-
in some markets, "ipe" is a multitude of similar species with similar characteristics for decking. other species are sold under their own market name into the decking market too.
you might find some work better than others for bow wood.
one rule of thumb is to look for high density boards
-
BB The woods you mentioned are proven bow woods used by manufacturers throughout the last several hundred years. Other woods may well make good bows(oak ash etc), but not for all designs, maybe just flatter, wider bows. Some of those woods can be used for narrow bows like ELB but they need an extra process, like heat treatment, and or heat reflexing to give good performance. Extra labor time increases the cost of bow, more so than use of ideal materials.
Another option is to glue up edge sections of a tough bamboo eg tonkin cane(power fibres, not the softer pith). Its different to the way you make your boo bows because only the backing is left with nodes. The belly is tillered like a regular wood bow, and doesn't have, belly with intact nodes. This method sure is a lot of extra work, but was highly regarded in the pre fibreglass era, for top of the line performance, and shootability.
You can buy boo floor boards already glued up. They can make a nice shooting bow when backed. They need reflexing to avoid excessive set though. This is likely due to higher content of pith as they are not planed to maximise the content of power fibres.
A word of warning if you try the floorboard method, thickness sand the finish off first, because it blunts plane blades rather quick.
-
My favorites for boo include vine maple, yew, African pear, and western serviceberry. Good luck and have fun.
-
I have used Armadrillo under bamboo and it is fine. I baught the armadrillo as a terrace plank in the local lumber shop.
Also I have used wild service berry (Elsbeere / schweizer Birnbaum) and hornbeam (Hainbuche).
I thinke bamboo is perfect under bamboo and for short bows you don't need a core...
-
Thanks guys. I learned a bunch new stuff! I am going to see what is available and will let you know
-
The majority of tropical woods tend to chrysal. Massaranduba is a good one but takes a long time to dry out. Also not very expensive as it is a poplular decking wood.
-
jepp, massaranduba I have also used. But the dust burns like pepper in my nose.
-
depending on the availibility in your area you could try Eucalyptus woods? there are thousands of species, but I know some aussie bowyers have good luck with boo backed spotted gum. Likewise I have heard very good things about Aussie cypress, Colin Gair of "outlaw Bows" reckons it equals yew.