851
Volvo excavator in a marble quarry.
852
Manufacturing a twisted tape turbulator with a metal twister.
853
SpaceX Starship transported on a Fagioli heavy lift transport vehicle, via @austinbarnard45.
854
A horse meets Joey, the horse puppet from War Horse.
855
The electro-kinetic Coca-Cola sign at 2 Times Square.
856
Cleaning a whisk with a whisk wiper.
857
Non-Newtonian fluid on a speaker cone.
858
The Multi-Headed Nut Wizard can pick up and hold up to 40 lbs of nuts.
859
Dutch army testing emergency brake of a Leopard tank via @MiroslavYamato
860
Leveling concrete with a Somero S-15R Laser Screed.
861
Concrete curb extruder.
862
A KC135 tanker’s autopilot accidentally disengages while refueling an E3 Sentry. The Sentry pilot's quick reflexes prevent a collision 😮
863
Pouring epoxy flooring with spiked shoes.
864
Coupling trains.
865
Dipperfox Stump Crusher 600.
866
Hardening and oil quenching herringbone gears.
867
Longest carbon nanotubes, grown at Waseda University.
868
3D printed universal joint coupling by John Beale.
869
Case-hardening the teeth of a gear with induction.
870
A cat feeder by Ben Millam that requires the cat to hunt for balls.
871
SNAG, a quadcopter with legs modeled after a peregrine falcon by Stanford and the University of Groningen.
872
Pedal-powered rollercoaster by Dongshengda Amusement Equipment Co.
874
Inside the mind of a LEGO engineer, by @jasonallemann
875
Janney coupler between train cars, via the Fairfax Station Railroad Museum.