Rocketflip. Want to build a Repulsor arm like Robert Downey Jr wears in Iron Man 2?!? Let Zack Finfrock shows you how! It's Zack's first episode of BFX and he is starting with a bang...more specifically a Repulsor blast!Indy Mogul's Backyard FX features cheap, DIY filmmaking tips and tutorials including special effects, props, and camera equipment. 'Build' episodes on Mondays and 'Original Short' test films on Tuesdays featuring the build. Website: www.indymogul.com Submit www.indymogul.com Twitter: www.twitter.com Facebook: www.facebook.com