Mini cannon - Gravitrax compatible piece

This Gravitrax compatible piece resembles a mini cannon. It features two entrances, a small slide and an exit. Also it has a minimalist design for faster printing time and less filament usage. The connector, which is printed separately, must be glued to the main part. Update 2026-04-14:adjusted the profile of the tunnel to avoid a situation where the ball might get slowed downadjusted the thickness of the base to fix a small esthetic issueadjusted the height of the connector to fit the new thickness of the base