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Ash warr bow....
sagitarius boemoru:
Grab a heat gun and adjust the stiffness of weak spots by heat treating the belly. Works like a charm with ash.
J.
alanesq:
I did a lot of experimenting with heat treating ash when I was trying to make a 130lb bow
I found that it quickly dried the wood which changed its properties significantly but when the moisture content returned to normal (which takes weeks) it returned to how it was before
sagitarius boemoru:
Its not about drying. Its about hardening weaker spots (or whole belly) and that can be done. I have made 120# ash bow with aonly about 1´´ net set.
It has to become sticky and change collour to something like hazelnuts. Then the properties of wood change pernamently as the stuff inside of cells cooks.
Jaro
alanesq:
Interesting - I will have to have another try at this some time
At the time I was hoping it would help stop my bows chrysaling (when I was trying to get past 120lbs) but finally decided it wouldnt help with this
in the end I removed the belly and glued some oak on, this allowed me to get to 165lbs no problem (although this was way heavier than I wanted)
sagitarius boemoru:
Once it starts to chrysalls theres nothing to stop it Alan. I had little of succes of remedy chrysals with heat treating. Deep heat treating - scorch does improve strenght of the belly wood, but the elasticity suffers. This is little of problem with ash, which is too spongy or overelastic for these bows. Also I have found that for ash to perform really well it has to be as dry as hickory.
Jaro
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