Originally Posted by JohnBuckner

Steve my recommendation for the the spar doublers as on your other thread wll be to use two 1/8th inch birch ply one on the front side of the top and bottom spars and them one inlaid to the back side this of course involves cutting the ribs back a bit before refilling in the ribs and then the sheeting. Thirty minute epoxy is perfectly fine for the spar doublers.

I have done a number of cutting wings in half to provide anhedral and currently three cuts on an existing wing to provide a gull wing for a stick. This type of reattachment of the wings works very well.


I understand your desire to use a substitute for this repair but if it were me and I was out of my supply of Birch Ply (If I remember correctly 1/8th is four ply) I would be on the phone with my club rooster and I would find from my mates for sure.

On your other thread about this one of the fellows listed a supplier. Do yourself a favor and order yourself up some for the future. Most all the normal hobby wood suppliers carry Birch Ply in the very handy 6 x 12 inch size.

John