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Revert to October as active challenge, add November as upcoming - October challenge is still active until November 12 - November challenge added as Upcoming-Challenge page - Updated navigation to show Active and Upcoming links

Eric Spooner
2025-10-28 15:39:26 -05:00
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Current-Challenge.md

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[← Back to Home Page](Home) [← Back to Home Page](Home)
# Current Challenge: November 2025 # Current Challenge: October 2025
## "Wait, This Was Printed? How Are There No Layer Lines?" ## "Is it Glass or Clearly Natural?"
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! Experience the clarity of 3D Fuel's "Clearly Natural" filament in this transparency-focused challenge! Participants will attempt to create the clearest possible print, testing the limits of clear filament printing techniques.
## Challenge Details ## Challenge Details
### Materials & Constraints ### Materials & Constraints
- **Filament**: 3D Fuel filament (any type: PLA+, Pro PLA+, PCTG etc.) - **Filament**: 3D Fuel "Clearly Natural" - Available in two variations:
- **Nozzle Requirement**: Must use a 0.4mm nozzle (REQUIRED) - PCTG (Polyethylene Terephthalate Glycol)
- **Estimated Filament Usage**: Approximately 3 grams (for reference only) - PLA (Polylactic Acid)
- **Model Specification**: - **Maximum Filament Usage**: 250g per entry
- **Dimensions**: Exactly 25mm × 25mm × 25mm cube (REQUIRED) - **Model Specification**: Cylinder - 25mm diameter x 50mm height
- **Wall Count**: Exactly 2 walls (no more, no less) (REQUIRED) - **Print Mode**: Vase mode (approximately 6 grams of filament)
- **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 ### Competition Categories
- **Smoothest Surface**: Best overall surface finish with minimal visible layer lines straight off the printer - **PCTG Division**: For prints using Clearly Natural PCTG
- **No post-processing allowed** - cubes must be judged as-printed - **PLA Division**: For prints using Clearly Natural PLA
- **Overall Winner**: Best clarity across both divisions
### Judging Criteria ### Judging Criteria
1. **Layer Line Visibility** (100%): The appearance and visibility of layer lines - less visible is better 1. **Clarity & Transparency** (40%): How clear and glass-like is the final print?
- All cubes must meet basic challenge requirements (25mm cube dimensions, exactly 2 walls, 0.4mm nozzle, no post-processing) 2. **Print Quality** (30%): Surface finish, layer adhesion, and overall structural integrity
- Winner is determined solely by smoothness of surface and minimal layer line appearance 3. **Technique Innovation** (20%): Creative printing techniques to maximize transparency
4. **Challenge Adherence** (10%): Following material constraints and using supplied model
### Submission Requirements ### Submission Requirements
- **Physical Model**: Bring your printed 25mm cube to the December meetup for judging - **Model Compliance**: Cylinder must measure 25mm diameter x 50mm height
- **Dimension Verification**: Must be exactly 25mm × 25mm × 25mm - **Vase Mode**: Must be printed in vase mode (single perimeter wall)
- **Wall Count Verification**: Must show exactly 2 walls when inspected - **Weight Verification**: Should use approximately 6 grams of filament
- **Nozzle Verification**: Must be printed with 0.4mm nozzle - **Documentation**: Include photos showing transparency (with light sources)
- **Settings Documentation**: Share your winning settings (layer height, temperature, speed, cooling, techniques) - **Settings Documentation**: Share printer settings used (layer height, temperature, speed, etc.)
- **Process Notes**: Brief description of your approach - **Process Notes**: Brief description of techniques used to achieve clarity
## Timeline ## Timeline
- **Challenge Announcement**: November 12, 2025 (at November meetup) - **Challenge Announcement**: October 1, 2025
- **Submission Deadline**: December 10, 2025 (at December meetup) - **Model Specification Released**: October 13, 2025
- **Judging Period**: December 10, 2025 (during December meetup) - **Submission Deadline**: October 28, 2025
- **Winner Announcement**: December 10, 2025 (end of December meetup) - **Judging Period**: October 29-30, 2025
- **Winner Announcement**: October 31, 2025
## Creating the Cube Model ## Creating the Cylinder 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 × 25mm × 25mm with 2 walls and no top
- **Ready to slice**: Import into your slicer and adjust settings for your printer
### Using Bambu Studio ### Using Bambu Studio

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Home.md

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### 🏆 Current Challenges ### 🏆 Current Challenges
- **[Current Challenge](Current-Challenge)** - November 2025: "Wait, This Was Printed? How Are There No Layer Lines?" - **[Active Challenge](Current-Challenge)** - October 2025: "Is it Glass or Clearly Natural?"
- **[Challenge Archive](Challenge-Archive)** - Past and upcoming challenges - **[Upcoming Challenge](Upcoming-Challenge)** - November 2025: "Wait, This Was Printed? How Are There No Layer Lines?"
- **[Challenge Archive](Challenge-Archive)** - Past challenges
- **[How to Participate](Challenge-Participation)** - Guide for joining challenges - **[How to Participate](Challenge-Participation)** - Guide for joining challenges
### 🤝 Community Resources ### 🤝 Community Resources

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Upcoming-Challenge.md Normal file

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[← Back to Home Page](Home)
# Upcoming Challenge: November 2025
## "Wait, This Was Printed? How Are There No Layer Lines?"
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
### 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 × 25mm × 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 25mm cube to the December meetup for judging
- **Dimension Verification**: Must be exactly 25mm × 25mm × 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**: 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 × 25mm × 25mm with 2 walls and no top
- **Ready to slice**: Import into your slicer and adjust settings for your printer
### Creating from Scratch
See the full [November 2025 Challenge Details](https://meetup.fargo3d.com/Fargo3d/3DPrintMeetup/src/branch/master/challenges/November-2025) for complete instructions on creating the model using Bambu Studio, Orca Slicer, or other CAD software.
## Tips for Success
- **Lower layer heights** (0.1mm-0.12mm) help reduce visible lines
- **Slower speeds** improve surface quality
- **Temperature tuning** is critical for layer adhesion
- **Proper cooling** prevents warping without sacrificing layer bonding
- **Material choice** matters - some 3D Fuel filaments naturally produce smoother surfaces
---
**This challenge will become active on November 12, 2025**