Stemwurks

Description: Magcraft NSN0582 Rare-Earth Disc Magnets, 0.75 in. Diameter x 0.25 in. Thick, 4-Count These disc magnets are 0.75 inch (19.1mm) diameter and 0.25 inch (6.4mm) thick. They are magnetized through the thickness. They are composed of grade 40...

Description: Magcraft NSN0586 Rare-Earth Ring Magnets, 0.5 in. Outside Diameter x 0.15 in. Inside Diameter x 0.125 in. Thick, S, 12-Count These countersunk ring magnets are 0.500 inch (12.7mm) outside diameter, 0.150 inch (3.8mm) inside diameter and 0...

Description: Magcraft NSN0601 Rare-Earth Disc Magnets, 0.25 in. Diameter x 0.1 in. Thick, 50-Count These disc magnets are 0.250 inch (6.4mm) diameter and 0.100 inch (2.5mm) thick. They are magnetized through the thickness. They are composed of grade 40...

Description: Magcraft NSN0610 Rare-Earth Block Magnets, 0.25 in. Long x 0.25 in. Wide x 0.1 in. Thick, 50-Count These block magnets are 0.25 inch (6.4mm) long, 0.25 inch (6.4mm) wide, and 0.1 inch (2.5mm) thick. They are composed of grade 40 neodymium...

Description: Magcraft NSN0732 Rare-Earth Disc Magnets, 0.375 in. Diameter x 0.0625 in. Thick, 40-Count These disc magnets are 0.375 inch (9.5mm) diameter and 0.063 inch (1.6mm) thick. They are magnetized through the thickness. They are composed of grade...

Description: Pathfinders PFD- 18 Leonardo Da Vinci Ornithopter Wooden Kit Flying has always been a dream of humans, and Leonardo™s fascination with birds and flight was evident in his studies of birds and different human powered flying machines. His...

Description: Pathfinders PFD-19 Leonardo Da Vinci Helicopter Wooden Kit One of Leonardo™s most iconic images, the Aerial Screw (also known as the Helicopter) illustrates the ingenuity of da Vinci, and indicates (along with many other drawings!) his...

Description: Pathfinders PFD-22 Leonardo Da Vinci Trebuchet Wooden Kit Considered by many to be the most powerful and destructive of all the siege engines, the trebuchet took many forms throughout the Medieval world, hurling huge rocks, giant fireballs...

Description: Pathfinders PFD-23 Medieval Catapult Wooden Kit The catapult has a long and interesting history. It has been around in many forms, evolving since about 400 BC. This model is based on the medieval styles that were used during the middle ages...

Description: Pathfinders PFD-28 Hydraulic Robotic Arm Wooden Kit 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),...

Description: Pathfinders PFD-32 Leonardo Da Vinci Trebuchet Wooden Kit While Trebuchets were common siege engines in Medieval Times, Leonardo™s take on the most powerful weapon of the time was unique “ his design used one main mast, different from all...