"I watched the video and the hover was not that stable. As far as the design feature, it's massive and has more mechanical parts to fail during flight. Even if it's more efficient it will never been so much more efficient than the cost of maintenance…"

"It would be even more stable if it was hanging below the frame."

"There are all awesome ideas for power distribution for various loads.
@R_Lefebvre that is a piece of art! Is their a related blog post about that build?"

"Chris, what CNC machine are you adding to your workshop?"

"@dudz - I did look at it when it was on Kickstarter a while back, however I would suggest looking and backing http://ultra-bot.com/ instead, for $899."

"Two different technologies. If you are looking for that kind of 3D printer there is already one available as a kit and soon the entire plans and software will be released to public. Go to http://www.b9creator.com"

"Does the density or shape of the ABS change the material contraction amount? If not both should remain the same other than the normal 3D printing stubble. You could also make the male part of the snap slightly larger and sand it to a more precise…"

"Printed nuts and bolts from the 3D warehouse :-). What about making them snap together."

"I'm very curious about the cost of materials as well. 
As far as construction. Did you consider welding the pieces together with acetone instead of using bolts or screws? That would reduce the weight and my understanding from others is the chemical…"

"There is nothing wrong with Sketchup. I've tried other CAD programs and unless you want to spend countless hours learning how to do things "right" there is no need. Sketchup files can be cleaned up and exported into many formats. I don't have a 3D…"

"Thanks for this post and sharing your knowledge."

"Try desk.com it's great and we've been using it for over a year."

"Did you use the Fat Shark camera or hook into the GoPro somehow for your FPV camera? "

"Better spectator area is the best idea, I agree wholeheartedly! :-)"

"I think any vehicles with props or potentially dangerous mechanics should have a dead man's switch from a remote which must be held down during the entire course. Maybe held by the judge or an official just like the robot wars use. 
Also couldn't…"

"that would be very COOL. Can the existing software accommodate one or more of the motors changing orientation like that?"