New Knex Optimus Prime Transformer By 18efroese in LivingLEGO & K'NEX4,15987Save PDFFavoriteIntroduction: New Knex Optimus Prime TransformerBy 18efroeseFollow More by the author: About: Mechanical Engineering. Inactive? More About 18efroese » Who wants the jetfire combo? Step 1: Body Part 1Step 2: Body Part 2Step 3: ArmsStep 4: HeadStep 5: LegsStep 6: AssemblyStep 7: Transformation