I don't think it is critically important one way or the other, but I cut mine square with the spars. <http://jeffsplanes.com/KR/2013_Trim.html> It just seemed easier that way.
Jeff Scott Los Alamos, NM > Sent: Thursday, July 03, 2014 at 5:38 PM > From: "Paul Visk via KRnet" <krnet at list.krnet.org> > To: "KR EMAIL BOARD" <krnet at list.krnet.org> > Subject: KR> Trim tab cut out. > > This might be a silly question but I can't decide. Should I cut the trim tab > out square with the spar? Or square with the trailing edge? and whatever I > decide I know my ray allen trim tabs servo would have to be square to the > tab.? > > Paul Visk > Belleville Il > 618 406 4705