Eider: Varnishing the Superstructure Posted on January 10, 2012 by coffeeadmin January 10, 2012; 1:30 pm – 5:30 pm; day 44. I put the 1st coat of varnish on the fir superstructure and the redwood galley. Then I cut, glued and clamped the gunwale clamps. [Show picture list]