I took t' airframe from t' take bin at a launch, took a nose cone I had lyin' around, me bucko, rolled a paper cone around it, put nose weight. Avast! Made t' engine mount out o' a few layered penny rolls. Well, blow me down! Used some spare centerin' rings from an alpha kit. Used a fin design scheme from a custom rockets kit. Cut them from a slightly thick sheet o' balsa from a model plain kit. T' upper fins are just cardboard. Ahoy! I rolled t' launch lugs from penny rolls. Avast! It resembles a soundin' rocket, shiver me timbers, which is why I used t' nike name. T' SB part just stands for scratch built.