Teching Flying Dragonfly Kinetic Sculpture 3D Metal Model DIY Kits Features:.Exquisite Desktop Collection & Decoration: The 3D metal dragonfly model combines mechanical engineering with insect wing power to create a communal handicraft. It is cast using a high-precision CNC process, colored by ..

Teching Galileo Pendulum Clock Kit Full Aluminum Alloy Stirling Engine ModelFeatures:.100% brand new with high quality.Origin of the story: The physical fact of the swing: In a church in Pisa, Galileo, then 18 years old, noticed that the frequency of the bell's swing was fixed. It took another 75 ye..

Teching Single Cylinder Steam Car Assembled Model Building Kits Used Engine For sale In the past, this was displayed. Consequently, it is already put together.Features:.The Birth of Single-cylinder Automobile: Carl Fritz Benz submitted a patent application for his vehicle invention to the German Pa..

TECHING Workable Small Mini horizontal shaft  Diesel Engine Metal Model Kits DIY OHV 4-cylinder Engine Features:Exquisite Mechanical Decoration: The cleverly built tiny OHV inline four-cylinder diesel model, with premium quality & extremely textured metal parts, provides an immersive ..