Omen – LB32 Cartridge Toy Blaster – STL Files

Meet the Leblasto Omen—a fully 3D-printed, shell-ejecting single-shot blaster built for smooth mechanics, realistic action, and pure mechanical satisfaction. The Omen uses an opposing-tension slide system: the slide naturally wants to open under rubber-band tension, and closing it both loads and arms the blaster.

The Omen fires using LB32 pre-primed cartridges, which are fully 3D printed, powered by exercise bands, and shared across the JESTER and WISP platforms. Load a cartridge, close the slide, pull the trigger, and enjoy clean, automatic shell ejection after every shot.

How It Works

1. Insert an LB32 pre-primed cartridge into the chamber.

2. Close the slide

3. Pull the trigger:

   • The hammer hits the striker.

   • The striker releases the LB32 cartridge’s stored band energy.

   • The slide snaps rearward under tension and ejects the spent shell in a satisfying arc.

   • The backward motion resets the internal mechanism for the next reload.

Features

• Fully mechanical—no electronics, no complex hardware.

• Clean, reliable automatic shell ejection after every shot.

• Fires using LB32 exercise-band-powered cartridges (same as JESTER & WISP).

• Fully 3D printable in PLA (PLA Tough recommended).

• Extremely low hardware requirements: just PLA parts, office rubber bands, and exercise bands.

• Compatible with mega-sized 95×20 mm foam darts.

• Includes 3MF files.

• Performance around ~60 FPS.

The Leblasto Omen is engineered for makers who appreciate clever mechanical design and satisfying functional motion. If you love shell-ejecting blasters, this one is an absolute must-print.