RE: BEGINNER'S BUILD - Tower Trainer .40
SHEAR WEBS - steps 10 thru 12
10) Remove the pins holding the spar in place but leave the panel pinned flat on the board by the leading and trailing edges.
11) Cut the shear webs from the 1/16”x 2 ½” balsa sheet. With plenty of wood glue, use enough to squeeze out when you press the parts together, install all the shear webs to the spars (PHOTOS 1 – 9). It is not necessary to glue the shear webs to the ribs as the purpose of these webs is to support the spars.
12) Reinforce the front of the shear webs where they contact the spars with a line of wood glue (PHOTO 10).