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Update Upcoming Challenge timeline for December/January cycle

Eric Spooner
2025-12-02 17:05:36 -06:00
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Current-Challenge.md

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---
[← Back to Home Page](Home)
# Current Challenge: December 2025
# Current Challenge: November 2025
## "Bring Your Test Models"
## "Wait, This Was Printed? How Are There No Layer Lines?"
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!**
Can you achieve the smoothest, most layer-line-free surface finish possible? This challenge pushes your printer tuning, slicer settings, and material knowledge to the limit. The goal is simple but difficult: create a 25mm cube with 2 walls and no top that looks so smooth, people question whether it was actually 3D printed!
## 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?
### Materials & Constraints
- **Filament**: 3D Fuel filament (any type: PLA+, Pro PLA+, PCTG etc.)
- **Nozzle Requirement**: Must use a 0.4mm nozzle (REQUIRED)
- **Estimated Filament Usage**: Approximately 3 grams (for reference only)
- **Model Specification**:
- **Dimensions**: Exactly 25mm x 25mm x 25mm cube (REQUIRED)
- **Wall Count**: Exactly 2 walls (no more, no less) (REQUIRED)
- **Top Layers**: 0 (no top surface)
- **Bottom Layers**: Standard (as needed for proper adhesion)
- **Infill**: 0% (hollow interior)
- **Print Mode**: Standard FDM/FFF printing (no resin printing)
### Competition Categories
- **Smoothest Surface**: Best overall surface finish with minimal visible layer lines straight off the printer
- **No post-processing allowed** - cubes must be judged as-printed
### Judging Criteria
1. **Layer Line Visibility** (100%): The appearance and visibility of layer lines - less visible is better
- All cubes must meet basic challenge requirements (25mm cube dimensions, exactly 2 walls, 0.4mm nozzle, no post-processing)
- Winner is determined solely by smoothness of surface and minimal layer line appearance
### Submission Requirements
- **Physical Model**: Bring your printed test model(s) to the December 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!
- **Physical Model**: Bring your printed 25mm cube to the December meetup for judging
- **Dimension Verification**: Must be exactly 25mm x 25mm x 25mm
- **Wall Count Verification**: Must show exactly 2 walls when inspected
- **Nozzle Verification**: Must be printed with 0.4mm nozzle
- **Settings Documentation**: Share your winning settings (layer height, temperature, speed, cooling, techniques)
- **Process Notes**: Brief description of your approach
## Timeline
- **Challenge Announcement**: December 10, 2025 (at December meetup)
- **Show & Tell / Voting**: December 10, 2025 (during December meetup)
- **Challenge Announcement**: November 12, 2025 (at November meetup)
- **Submission Deadline**: December 10, 2025 (at December meetup)
- **Judging Period**: December 10, 2025 (during December meetup)
- **Winner Announcement**: December 10, 2025 (end of December meetup)
## Creating the Cube Model
### Using the Provided Model
**Download the pre-configured cube:**
- **File Location**: [Challenge Files/November2025/Cube.3mf](https://meetup.fargo3d.com/Fargo3d/3DPrintMeetup/src/branch/master/Challenge%20Files/November2025/Cube.3mf)
- **Pre-configured**: Already set to 25mm x 25mm x 25mm with 2 walls and no top
- **Ready to slice**: Import into your slicer and adjust settings for your printer
### Using Bambu Studio
**Step 1: Add Primitive**
1. Open Bambu Studio to a new project
2. Right-click on the build plate
3. Select "Add Primitive"
4. Select "Cube"
**Step 2: Resize the Cube**
1. Click to resize the cube
2. Set X, Y, and Z to 25mm
### Alternative Methods
- **Fusion 360**: Create square sketch (25mm x 25mm), extrude to 25mm height
- **Tinkercad**: Use cube shape, adjust dimensions to 25mm x 25mm x 25mm
- **FreeCAD**: Create cube with specified dimensions
- **Any CAD Software**: Simple cube 25mm x 25mm x 25mm
## Awards & Recognition
### Awards
- **Smoothest Surface Winner**: Best layer-line elimination straight off the printer
- **People's Choice Award**: Community favorite
### Documentation
- Winner photos for social media sharing
- Settings profiles shared with community
- Technique documentation for learning
---
**Full challenge details**: [December 2025 Challenge Repository](https://meetup.fargo3d.com/Fargo3d/3DPrintMeetup/src/branch/master/challenges/December-2025)
**Full challenge details**: [November 2025 Challenge Repository](https://meetup.fargo3d.com/Fargo3d/3DPrintMeetup/src/branch/master/challenges/November-2025)

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Upcoming-Challenge.md

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gitea: none
tags:
- challenge
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- challenge-003
---
[← Back to Home Page](Home)
# Upcoming Challenge: January 2026
# Upcoming Challenge: December 2025
## [Challenge Title TBD]
## "Bring Your Test Models"
**This challenge will be announced at the January 2026 meetup!**
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.
## What We Know So Far
**Bring your favorite test models to the meetup!**
- **Challenge Announcement**: January 2026 (at January meetup)
- **Submission Deadline**: February 2026 (at February meetup)
- **Judging**: February 2026 (during February meetup)
## Challenge Details
## Challenge Details Coming Soon
### 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?
Challenge theme, requirements, and full details will be revealed at the January meetup. Stay tuned!
### 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)
---
**This challenge will become active in January 2026**
**Full challenge details**: [December 2025 Challenge Repository](https://meetup.fargo3d.com/Fargo3d/3DPrintMeetup/src/branch/master/challenges/December-2025)