When making a toy excavator arm, or any robotic arm, the typical approach is to put motors at the joints, or if there isn’t room, to put the motors somewhere else and transfer the force using fishing ...

This video has been around for a few months, but I just came across it and it’s astounding. Check out this Brazilian teen’s scratch-built model backhoe. Using plastic syringes and silicon tubing, he’s ...

Introduction Not even the strongest human could lift a truck into the air. Our brains, however, are smart enough to create a tool that can lift heavy objects for us: hydraulic lifts! You can find them ...