Maker Studio Propellers Set

This Thing is an open source edition of our Maker Studio Propellers Construction Set that we sell on [Amazon.]( http://www.amazon.com/ThinkFun-Maker-Studio-Propellers-Building/dp/B00TLEMNL0) We give you all the files to print your own parts, and also we include PDF files of the Instruction Manual and Build Assembly Diagrams for four machines that use these parts. We also 10 open ended Engineering Challenges (PDF file) to stretch your creative thinking muscles.

The four machines you can bu