3D Printed FPV Quadcopter The Crossfire

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The Crossfire has been updated and is now available for viewing here: http://www.thingiverse.com/thing:234867. This is my version of a 3D printed quadcopter, designed from the ground up for FPV but also suitable as an aerobatic quad. After months of development and testing, I've decided to release it as a finished project thanks to input from this site's members. I will continue to develop and add components/modules to make it more customizable. A tricopter and hexacopter are in the works, with many interchangeable components across my designs. Print, fly, and enjoy! Input is always appreciated. Thanks for your support. If you like my designs, consider a small donation to help me keep adding cool things: Donate. Watch this video for more information on the quadcopter: http://vimeo.com/79370836. Most of the components can be sourced from Hobbyking or GetFPV (http://www.getfpv.com), a great one-stop shop for multirotors and FPV equipment. Here are the electronics needed: * Motors: RCTimer 750 Kv * ESCs: Turnigy Plush 30A * Battery: Turnigy Nanotech 3S or 4S 4000mah * Flight Controller: KK 2.0 Update (11/14/13): I've uploaded a video of BASE jumping, showing the quadcopter in action. Update (8/14/13): If you're looking to use a CCD camera instead of a GoPro, check out this thing: http://www.thingiverse.com/thing:133200. Update (7/30/13): I've put together a video of the print and flight with my quadcopter. It's been long overdue, but hopefully it will inspire some people to give it a try. Update (6/30/13): I've removed the links to HobbyKing.com as they often change. A quick search for any component on HobbyKing or Google should yield good results. Update (5/20/13): I've uploaded the .SKP files for the quadcopter, so you can start modding and tweaking! Update (3/18/13): I've added a new Bottom Plate with holes for Tube spacers. Instructions: 1.) Print the main body parts at 20% infill. 2.) Print the arms at 50% infill, depending on material used you may be able to get away with less. 3.) Press-fit the arm, leg, and pad together, or use super glue if needed. 4.) Assemble frame and arms using 8-32 nylon machine screws or like. 5.) Use a push rod to connect the servo arm to the hinge arm on the GoPro case. 6.) Add ear plugs or vibration dampening material for reduced rolling shutter problems. 7.) Add electronics. 8.) Dynamically balance props on the motors, this is crucial for stable flight and to eliminate vibrations. 9.) Fly!