I take the thorns out (
http://www.primitivearcher.com/smf/index.php/topic,72422.0.html )
cut and debark except an inch or so at tips (tips will check)
bundle in groups of 6 to 10 tied with rope
Every couple days after cut I straighten them all by hand. no heat.
usally it takes 3 or 4 sessions (6-10) days to have them almost perfectly straight
then let them complete the drying
They usally check at ends (that I'll remove) and sometimes where there was a thorn
Checks at thorn are not a concern. they just add character
when dry I sand them at will, do self knocks, fletch...
Knocks. I drill a hole where the string will sit and open a slit with a knife tip moving from the hole outward. then refine with sand paper. Last i secure with glue and thread (sinew would probably be better) just below the hole.