What Exactly,

are you looking at?

it is of course home made, but what exactly does it do? you may have seen different domino clips, where dominoes fall in a pattern or sequence, well this home built machine takes on the job of placing the dominoes upright and ready for their fall,

Matthias Wandel, built this simple wooden device to put the dominoes in place, if you just want to see it in action, skip ahead to about 5:20. but half of the fun is seeing how he built it, speaking of which here is another of his inventions in wood, 

the never ending slinky ladder,

and the video with a few fails in it to show how he achieved the slinky steps, great fun.