Get smart curated videos delivered to your inbox every week.      
The Kid Should See This

The Slinky machine: A hand-cranked, wooden Slinky escalator

What if you had a never-ending stairway for a Slinky to “walk” down? How long do you think it might continue to descend? Matthias Wandel of Woodgears.ca decided to find out. This is The Slinky Machine, a specially-constructed, wooden Slinky escalator or treadmill.

Matthias-Wandel-woodgearsdotca-slinky-machine

The challenges that come with making a Slinky Machine include keeping the Slinky from falling off the steps left or right, keeping its strides consistent, and getting the steps to move at just the right speed so that the slinky will continue to descend. Wandel’s solutions: A backboard, a slight angle on each step and on the machine itself, a hand crank, and lots of measuring, testing, and practice.

How many steps can the slinky go? Watch:

Related DIY: Slinking Science on an inclined plane.

In the archives, more Slinky experiments and more from Woodgears.ca, including a Binary Marble Adding Machine and Paul Grundbacher’s marble machines.

h/t Boing Boing.

This award-winning video collection is reader-supported. Become a sustaining member to keep TKSST online and free for everyone, including teachers and parents who use it as a resource to spark learning and curiosity for kids.

🌈 Watch these videos next...

Mechanical singing bird box automata of the 1700s

Rion Nakaya

The Jules Verne-Themed Sanderson Orrery

Rion Nakaya

How Do Locks Work?

Rion Nakaya

How a Slinky falls in slow motion

Rion Nakaya

A Sisyphus kinetic sculpture made with LEGO

Rion Nakaya

The Writer, a drawing machine automaton by Pierre Jaquet-Droz

Rion Nakaya

The Slinky Drop in slow motion – Veritasium

Rion Nakaya

The Wintergatan Marble Machine, music made from 2,000 marbles

Rion Nakaya

Making wire gears + the kinetic sculptures of Arthur Ganson

Rion Nakaya