NOTE: THING:4599 IS AN UPDATED VERSION OF THIS WITH A LITTLE THICKER TRAILING EDGE FOR DURABILITY.This is a rubber band powered flying thing. Range 50 feet using a standard 3" x 1/8" rubber band.Per Natetrue's recommendation, I rounded the ends of the blades. File: flying_thing_100601b_rounded.stl has the rounded blades. see last image.See images "flying_instructions_page_1/2.jpg"--- SAFETY WARNING LABEL --- Use appropriate eye protection especially in the case of inter-office warfare. Care should be taken to avoid unprotected non-combatants.This is NOT a child's toy; any use by children should be under close adult supervision.This print is large and only has ~2mm X clearance to bolt heads and 1.5 mm clearance to edge of build platform in Y direction.Take the following steps to avoid banging into the socket head cap screws on the build platform or printing the raft over the Y edges of the platform: