Primitive Archer
Main Discussion Area => Bows => Topic started by: toomanyknots on October 25, 2010, 05:51:18 pm
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I've heard that sinew backing can change the tiller randomly months or even years after final tiller adjustment. Any tips on how to minimize this? I have gathered so much as,...
-Sinew needs to be cured very well. A month is fine but a year is better. I guess this could change the tiller as it gains weight, as it could gain strength unevenly, so I guess if this logic is true it would be better to cure fully before final tiller adjustment and finishing of the bow.
-Humidity/moisture.
-Sinew need to be extremely well shot in before it can be determined that it has plateaued.
Any tips on keeping an even tiller after sinew backing?
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No cure fr this if you use hide glue. It will continue pulling the bow into a reflex as the sinew continues to dry and shrink over time. Humidity also plays a part in this.
I had to retiller a friends sinew backed osage bow after he had it for 5 years. It started out around 55# and increased to about 65# after 5 years. It was too much for him.
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I put sinew on my bows before even floor tillering the bow. If you tiller a bow then you sinew it you may put more on one side or one area so tiller will adjust.