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Main Boards => The Bowyer's Bench => Topic started by: vth0kie12 on March 14, 2010, 03:39:00 PM

Title: twisted limb on a board bow
Post by: vth0kie12 on March 14, 2010, 03:39:00 PM
i got a longbow kit that is, ipe with a hickory backing. after i glued the backing on i notice the the ipe had a twist in it, i knew it wasnt good but i keep going anyway. well after i got the limbs cut out you really notice the twist in the limb now. (my limbs are a little too narrow so thats not helping) is there any way i can get it out ? i thought about trying to soak the wood or putting some steam on it and twisting it the other way. or should i just put it in the trash.
Title: Re: twisted limb on a board bow
Post by: Osagetree on March 14, 2010, 03:45:00 PM
Heat/water/steam and glue don't go well together. Maybe you can take it out messing with the tiller?
Title: Re: twisted limb on a board bow
Post by: vth0kie12 on March 14, 2010, 03:48:00 PM
dont think i am going to be able to get it out with the tiller. i tried but it didn't seem to help. thanks for the reply
Title: Re: twisted limb on a board bow
Post by: Pat B on March 14, 2010, 05:07:00 PM
What glue did you use?
Title: Re: twisted limb on a board bow
Post by: vth0kie12 on March 14, 2010, 09:26:00 PM
i used titebond, which i bet not going to go good with either the steam or the water
Title: Re: twisted limb on a board bow
Post by: Pat B on March 14, 2010, 11:24:00 PM
You can heat up the backing strip and the TB glue will release at 150deg (F). I did it with a heat gun.I started at the tip and worked a chisel into the joint and separated it as I heated down the bow. Then you can clean up the surfaces and re-glue it up untwisted.
Title: Re: twisted limb on a board bow
Post by: Pat B on March 14, 2010, 11:26:00 PM
Also, Ipe, like other tropical woods don't react well to heat, wet or dry so trying to straighten it with heat is ineffective.