Mini Gearbox with Shell Housing

# Compact Gearbox Assembly

This is a compact gearbox assembly designed for mechanical demonstration and small-scale projects. The model includes the following components:

### Files
- `gear1.stl`: Small gear
- `gear2.stl`: Large gear
- `shell.stl`: Enclosure housing for the gear assembly

The enclosure is designed to hold the gears securely and is fastened using standard **M5 screws**.

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## Assembly Instructions

1. Insert the gears into the shell housing.
2. Align the axles properly.
3. Fasten the assembly using **M5 screws**.
4. **No glue is required.**

> Tolerances are optimized for FDM printing but may vary slightly depending on your printer's calibration.

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## Print Settings

- **Material**: PETG (recommended for strength and durability)
- **Layer Height**: 0.2 mm
- **Infill**: 20–40%
- **Supports**: Required for `shell.stl` (depending on print orientation)

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## Note

This model was created as part of the coursework for **Northwestern ME495: Intro to