The Slammer The slammer prop was designed and fabricated for a customer that wanted an effect from another companies design, but was unhappy with their prior track record. We generally try to steer away from similar props, but in this case we made an exception. Only knowing the end effect we designed a mechanism that would errect a upper torso 90 degrees to slam into a wall. The addition of a second cylinder allowed for less pressure to be exerted to erect the corpse as well as allowed for a sliding downwards effect prior to retraction. Purchaser: B. S.