along with the leading and trailing edge , do you also apply the cement to the wing ribs , and also is plastic cement glue heavy ? white glue always sag in soe unexpected spots, even when i thought i had all the edges of tissue attached, guess it was becoming unglue with water spay on tissue ,Mars - 1 said:Ok, thats for attaching the tissue to the frame, not for shrinking or finishing. Elmers will do the trick, but be careful not to get too much glue on things. Years ago, when I built my first balsa kit with my dad, we glued the tissue down with regular testors plastic model cement. I still do this. It works well, (believe it or not), is easy to control from the tube and gives enough working time..and sticks like glue!.I have actually gotten the covering so tight with this stuff that the tissue ripped when I sprayed the water.