Rival Flinger

This catapult uses a printed spring to store power and a cup to store your ball.  It prints as a single piece for simplicity.  Powerful?  Not as powerful as a trebuchet.  It can fit any 24mm ball but was designed for the Nerf Rival round.

Print Settings

• Material: PETG (Needed for spring flexibility)
• Nozzle: 0.6mm (0.4 should work)
• Layer Height: 0.28mm (0.20 should work)
• Infill: 20%
• Wall Thickness: 1.8mm
• Top/Bottom Thickness: 1.12mm (Just stay close to this)
• Supports: No