In recurve bow twists can happen for a couple of reasons. The form its
made on could not be level across the width of the bow.
This would cause twist. If you make the laminations, and one side is even
slightly thinner than the other across the width, the tip will twist towards
the strong side. If the limbs are cut off center, this can cause twist.
The easiest way to prevent twist if your just starting out is to make a
reflex deflex longbow rather than a recurve, as they tend to correct twist
when drawn rather than worsen it, or just don't make a tremendously
recurved bow the first time. A little twist is ok.
Answered on 7/31/2013
Darsteed from upstate NY