3DPrintMeetup/challenges/December-2025/readme.md

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# December 2025 Challenge: "Bring Your Test Models"

This month's challenge is all about the models we use to test, tune, and calibrate our printers. Everyone has a favorite "go-to" print—whether it's a Benchy, a calibration cube, a torture test, or something unique you've found.

**Bring your favorite test models to the meetup!**

## Challenge Details

### The Goal
Share what test models you use and why. Do you use them for:
- Calibrating dimensional accuracy?
- Testing overhangs and bridging?
- Tuning retraction settings?
- Checking first layer adhesion?
- Just for fun?

### Submission Requirements
- **Physical Model**: Bring your printed test model(s) to the January meetup.
- **Explanation**: Be prepared to share *why* this is your favorite test model and what it helps you achieve.

### Voting & Awards
- **Group Vote**: The group will vote on what they think is the **Best Test Model**.
- **Criteria**: Usefulness, uniqueness, or just plain coolness!

## Timeline
- **Challenge Announcement**: December 10, 2025 (at December meetup)
- **Show & Tell / Voting**: January 2026 (during January meetup)
- **Winner Announcement**: January 2026 (end of January meetup)