726
A tippe top is a unique top that will invert itself onto its stem when spun.
727
A tensegrity structure demonstrating floating compression by reddit user g0gentle.
728
Trimming foxing tape on a pair of Vans shoes with a hotknife.
729
Husqvarna Classic protective pants use kevlar fibers to stop chainsaws.
730
A hammerhead crane leased by Morrow Equipment Company lifts itself.
731
Prosthetic fingers by @NPDevices, on reddit user Rewster27.
732
Camera drone disguised as a hummingbird to film monarch butterflies for @PBSNature.
734
A "new sleep inducing invention for babies which also strengthens the leg muscles" from 1940, via
@AP_Archive
737
Ferrofluid in the presence of a magnetic field around a bolt by @NileRed2
738
Painting Lissajous patterns with a pendulum, by Cole Newman.
739
Motion capture of cats twitter.com/makotofalcon/s…
740
A switch on the Pilatusbahn cogwheel mountain railway.
741
Basketball hoop that doesn't let you miss by Shane Wighton.
742
The screen on the SMTown Coex Artium in Seoul.
743
A roughneck assembles a drill pipe by "throwing chain" to torque sections of pipe together.
744
A cat feeder by Ben Millam that requires the cat to hunt for balls.
746
Möbius Gears, a sculpture by Elmins Cosplay.
747
Intricate hobo nickel carved by Roman Booteen.
748
Hummingbird feeding glasses by John-Reid Gordon.
750
Using a Kanna plane to remove a very thin sheet of wood at Mini Kezuroukai in Kyoto, via Dylan Iwakuni.
Amazing feats of engineering. Tweeted by @kane and root.vc.