In today's video I want to show you 7 segment display with unique mechanism that is our own invention. There are 7 circles inside. Each circle has its own trigger that reads circle program and ...

Extra: Cut more cardboard strips and extend your scissor lift. How long can you make it? Extra: Your cardboard scissor lift is a nice example of how the mechanism works, but it is not very sturdy.

Paper Shooters, rifles made primarily out of cardboard, can fire those paper pellets up to a distance of 25 yards, lending a degree of professionalism to a pursuit that is usually more of a hobby.

Create the Pivot Point The jaws of life open and close from a central joint. To mimic this, make a small hole near the base ...

The mechanism to do this is fascinating, consisting of a sector gear with racks on either side. The racks are alternately engaged by the sector gear, moving a PTFE filament guide tube back and ...