Primitive Archer

Main Discussion Area => Bows => Topic started by: jayman448 on March 10, 2016, 12:31:37 am

Title: propeller twist
Post by: jayman448 on March 10, 2016, 12:31:37 am
Ive begun working a stqve that looked good until i got it all shaped up. Didnt realize it has a bit of propellar. Its nit even beginning to bend yet, just starting to look like a bow. How do i deal with this? Get it bending and then heat twist it out? Im only shooting for about 35# with this bow.
Title: Re: propeller twist
Post by: wizardgoat on March 10, 2016, 02:35:36 am
How much twist? Pics would help. A little bit is usually not a problem
Title: Re: propeller twist
Post by: Parnell on March 10, 2016, 09:26:56 am
I use a helper and wood clamps.  I put the limb in the wood clamps wrapped in a cloth so it doesn't get dinged, heat, and untwist.  Make yourself comfortable to hold it for awhile and hit it with a cold wet cloth when you've untwisted it to cool it down before you let it go.  Keep at it.
Title: Re: propeller twist
Post by: George Tsoukalas on March 10, 2016, 09:32:27 am
Is it a natural twist or did you cause it by uneven wood removal, jayman?
A little bit? I would not even worry about it unless it approaches 30 degrees.
If it is excessive, I do remove it this way.
http://traditionalarchery101.com/fixtwist.html
Jawge
Title: Re: propeller twist
Post by: Springbuck on March 10, 2016, 10:44:21 am
George is right on a straight limbed bow.  A few degrees is ok. 

 Otherwise, If you have to have it out, and it's pretty mild, look carefully at the grain and crown, keep the belly propellering with the back and the crown running down the middle as much as possible.  Then, with a handfull of C-clamps you can crank that twist out on a board or caul and fix it as you heat treat.

If it's more than you can do that way, I don't have a good method, but I'd try steaming and clamping section by section.