Main Discussion Area > Horn Bows
hornbow project numpty questions
Del the cat:
Great Q and A thread for us armchair, would be hornbow makers.
I'm looking out for local maple... damn council cut down a lovely one about a month back, I got there too late it was cut into stupid short sections .... grrr.
People with chainsaws who don't know the value of what they are cutting down ... grrr >:(
Del
stuckinthemud:
So, these horn plates are quite short, I'm thinking a Magyar style might be the best option?
If I do go with this form, then, is the outside timber of the lath on the back like a Turkish bow, or belly side like a self-bow, and if on the belly, I'm guessing I need to de-crown the core-lath? I was thinking of a three-piece or 5-piece using v-splices throughout.
BowEd:
Stuck....The outside of your core on a turkish is on the belly for form bending reasons avoiding splinters.An end view look of the core should look slightly oval to avoid the poissen effect.It reduces that extra mass weight off the corners and puts a stress line straight accross through the core from side to side looking at it from the end.
Most times both surfaces of the core are violated getting sinew and horn over it anyway.
stuckinthemud:
So, does that mean you would slightly hollow the horn plate?
mikekeswick:
You use either a flat joint or a convex core,concave horn joint. Both work.
There are a few reasons for the convex/concave way. As Beadman mentioned the outside of the tree is the belly of the bow because this is the best way to bend the cores eg. the outer fibers of the lathe are then uncut and able to conform to the bends without excessive splintering. The outer surface of lathes from small trees are naturally convex. Buffalo Horn is naturally concave on its interior. Therefore you can get more length and thickness from your available horn and have to remove less material from the formed and joined core.
However for a first bow it is easier to make flat mating surfaces.
A Magyar style bow is much easier to make than a Turkish bow (from a core point of view) and would be more suited to short horns.
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