Wingtip help required.

 From:  Frenchy Pilou (PILOU) 8 Jul 2008  (7 of 11) 
1762.7 
With Sweep 2 rails and half parts but I have not the Marco's result (any lines resulting) :)
You can also take Rail 1 as profil and profil as Rail 1 ;)

EDITED: 8 Jul 2008 by PILOU
Attachments:
Attachmentbirail.3dm
Attachmentbirail.jpg