Tony Hallo

I’m building an Extra 200 from 3 view drawings that I downloaded from the Extra site, for the wings I decided to use foam rib method of construction that will be shown in this thread. I first learned this method while building a Laser 200 from Wayne Urley plans some 20 years ago. Back then I built two jigging platforms from ¾” plywood, each platform measures 21”X48” . I made mine so that they can be bolted together, I cut the wing sockets while bolted together so that everything is straight.

I cut the rib blanks from ½” blue foam board, pink stuff works just as well. The blanks are cut larger than needed and trimmed while in the jig. The rib blanks are held in place with parting strips nailed down to platform. I normally tack glue the foam to the strip just to make sure nothing moves while sanding.