Estes ProtoX stick extensions

thingiverse

I attempted to load the design from http://www.thingiverse.com/thing:243861 but encountered issues with Slic3r. The design had sub-millimeter sized features that caused problems. To overcome this, I created a makeshift design that worked for me. However, my printer's holes were too tight, so I recommend printing the final version 3% larger than specified. Happy flying, but be prepared for crashes! I printed mine using PLA and a 0.3 layer thickness.