Backyard Trebuchet Breaks Sound Barrier

[Hornbein]

Carbon fiber, 3D printed parts, multiple rotations. Numerous small refinements of the design to get to a 776 mph release. Your castle remains unmenaced, as the payload weighs a mere 4 grams. Pretty good though for a hobbyist. "I've been building trebuchets from the age of 12."

 

[A.T.]

Your castle remains unmenaced, as the payload weighs a mere 4 grams.

Just a matter of time until it's a supersonic burning piano.