Mangonel Penny launcher

thingiverse

I see that is a unique contraption designed to launch large objects over long distances. Its distinctive shape, consisting of a frame holding two swinging wooden arms, allows it to fire massive stones and other heavy projectiles at enemies or siege walls with impressive accuracy and power. A skilled crew operates this ancient war machine by manually turning the handles attached to the arms, storing potential energy until release point triggers, unleashing force down the grooves. The momentum imparted to projectile propels it rapidly towards its target.