RE: step by step: build your own AA powered plane
next step will be to glue the wings to the fuselage. do a test fit of wing A in the wing slot in the fuselage. if it doesnt fit, either sand the slot or trim the slot a little bit at a time untill the wing can slide in. once you know wing A fits, apply some glue in the wing slot in the fuselage. slide wing A into the slot (1stpicture). next, place wing B on the wing slot in the fuselage. the glue will start setting up, and while its doing that, hold the wings tight against the fuselage and make sure the wings have an equal amount of dihedral (2nd picture). hold it there untill the glue is completely dry. when the glue is dry, the wings should have the equal amount of dihedral, around a half inch for each wing (3rd picture). getting the dihedral equal on both sides can be tricky sometimes. if you find that one wing is lower or higher than the other, just try flexing the wing up or down. if the balsa cracks, or the glue joint cracks, simply re-glue it and you can set the dihedral again. after you're sure the wings are set right, go ahead and apply some more glue around the area where the wing meets the fuselage. during a crash, this will be one of the most likely places for it to break.