To that end [semi] has produced a 3D-printed block and tackle system, which as can be seen in the video below the break, ... Pulley systems have been with us for a very long time, ...

Pulley systems ease lifting with ropes over wheels. ... This is called a block and tackle and is used to lift large, difficult-shaped objects, such as furniture.

Keywords pulleys, fixed pulley, movable pulley, block and tackle, force, lifting, simple machines, weight, mechanics Email us at [email protected] if you have questions about the footage and are ...

Perhaps the humble block and tackle — multiple parallel pulleys to reduce the effort of lifting — is not such a common sight as it once ... has produced a 3D-printed block and tackle system, ...

The ParaPull is an ingenious block and tackle pulley system scaled down to work with common 550 paracord. It fits in your pocket and gives you a 6:1 mechanical advantage over any heavy object.