Magnetic Artillery

Active parts

Loading and firing

Printing and Assembling

plate 1: Inner barrel + Base(Dark Gray)

plate 2: Barrel + Breechblock + Shaft (Silver)

plate 3: Fire button (Red)

plate 4: Bullet (Silver) (A pause has been set, magnets need to be placed manually)

Rough assembly demonstration

See the picture below for how to place the magnets:
Red is N grade, blue is S grade (no need to distinguish N or S, just be relatively correct)

This part of the magnet group repels each other and is difficult to install. You need to use the outer barrel to install a layer of magnets and move the barrel up one layer.
The magnets on the same layer that have been installed first also need to be pressed with your fingers. Only after installing 4 magnets on a layer can the barrel be moved up. Try it little by little and be patient.