I am going to try and explain one of my orignal questions a little better. Some of the fellas are asking about "how to" round or square the edges. That is a fairly simple deal. What I read a while back was a "jig" of sorts. (this is not used to round off or square edges). Instead, this simple apparatus helped you TAPER the aileron from LE to TE, keeping the sanding bar or razor plane at the correct angle and depth. This removal of stock was along the whole length of the aileron, from inboard to outboard tip.
I know it was simple and cheap, just can't remember!!!
I wish I would have printed off that posting. My memory is not the best.. lownslo