Stemwurks

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-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...

Description: Pathfinders PFD-50 Ancient Roman Ballista Wooden Kit The ballista was a powerful weapon “ originally invented by the Greeks over 2000 years ago and widely used by the Romans in battles and sieges. Using the stored energy in twisted sinew the...

Description: Pathfinders PFD-51 Ancient Trojan Horse Wooden Kit Ancient Greek legends have many references to the Trojan Horse “ a huge wooden horse that was left in Troy “ with warriors inside. When it was brought into the walled city, the warriors came...

Description: Pathfinders PFD-52 Ancient Roman Catapult Wooden Kit Originally invented by the Greeks* over 2000 years ago and widely used by the Romans in battles and sieges, the Catapult had many different methods of launching projectiles. During the...

Description: Pathfinders PFD-57 Ancient Roman Battering Ram Wooden Kit Battering Rams over the millennia had to evolve as the fortress defenders improved their techniques to repel the attackers. Starting with simple huge logs held by many attackers, to...

Description: Thames & Kosmos 550014 Ultralight Airplanes Construct awesome flying gliders with ultralight plastic and bamboo parts. Build five different types of planes with different wing configurations to learn how wings provide lift and how planes...

Description: Thames & Kosmos 550030 Solar-Powered Rovers The sun™s energy can be used to do some pretty astonishing things! Get ready to explore the amazing capabilities of solar energy by building your own solar-powered vehicles and devices. Using a...