The entry requirements are pretty low, you'll need a printer and some card plus a few basic tools and materials. Basic page size is A4 (sorry non-ISO paper countries) which will make a 44cm wingspan model. Those with access to an A3 printer can scale up 141% for a 62cm monster.
If you know someone who might enjoy making this kit or you just dig what I'm doing, please inform, retweet, spread the word. I spent ages on this thing and now I want to share it!