Pathfinders Hydraulics 4-in-1 Pack This kit contains 4 hydraulics kits in one mini-Mega box of fun. It almost like getting 2 free kits! These kits provide hours of interesting building and thoughtful use building blocks, moving Lego people around the...

Pathfinders Lift Bridge One of the most common types of bridges for freight trains, our Truss Design Lift Bridge is a working replica of the many lift bridges that have been made over the last 100 years. Lift bridges became...

Pathfinders Da Vinci Catapult This catapult is one of Da Vinci redesigns from the medieval catapults of 400 or so years earlier. While the Medieval catapult we made uses the force of twisted rope, this uses the tension stored in...

Pathfinders Robotic Arm This robotic arm is an easy to make 3-dimensional model that grabs, lifts items horizontally, and can turn very close to 90 degrees! Designed to be used alone (with a nice syringe holder), or in a group...