Constant-velocity joints (aka homokinetic or CV joints) allow a drive shaft to transmit power through a variable angle, at constant rotational speed, without an appreciable increase in friction or play. They are mainly used in front wheel drive vehicles, and many modern rear wheel drive cars with independent rear suspension typically use CV joints at the ends of the rear xle halfshafts and increasingly use them on the propshafts (drive shafts).
Watch How Steel Ribbons Are Shaped into Cookie Cutters
15.05.27
Sewing Machine [720x484]
Source: https://openpics.aerobatic.io/
A/C Compressor Prius II [2205×1560]
Source: https://openpics.aerobatic.io/
This has got to be one of the largest bench vise’ ever made.
Source: https://imgur.com/SWqMdtg
Testing of 1.4 million volt X-ray machine, 1941
via reddit