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Which core wood for bamboo-???-ipe trilams?
Bearded bowyer:
Hi
Ive used Beech several times as a core lam with ash back and ash belly, never had it crack.
The oak cores Ive used have been quite thin, but really seem to make the bow straighten asap. They have been very fast shooters.
Haven't had a problem with either woods cracking........yet ;)
Isn't rattan a type of bamboo?
toomanyknots:
Although, I think if you use a softer wood, make sure to taper the ends. If it is not good in compression, and there is a spot that there is equal core to belly, it may take more set than usual. So I taper my cores to where there is always a majority of belly wood for the most part, at least when using a core such as hard maple, or any maple, or yellow heart, etc. I know most people believe that if it works as a belly wood, than it will work as a core, which is a rule you can go by if you want.
AndiE:
Hi
Do you taper the backings too?
And with hardwood like laburnum or purpleheart as core there is no need for tapering?
Greets
Andi
toomanyknots:
--- Quote from: AndiE on December 08, 2013, 05:26:45 am ---Hi
Do you taper the backings too?
And with hardwood like laburnum or purpleheart as core there is no need for tapering?
Greets
Andi
--- End quote ---
I think tapering is still a good idea, I don't know how those two woods do in compression. Hard dense woods can still be weak in compression. If you do a thinner core though you can get away without tapering if you want, a lot of times I will do that. Sometimes I taper backings just because that is what the belt sander wants to do, especially when reducing the thickness of a bamboo backing. I don't think it really matter either way though.
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