Fix Current-Challenge markdown: remove duplicates, fix cylinder->cube, replace × with x
Eric Spooner
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[← Back to Home Page](Home)[← Back to Home Page](Home)
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[← Back to Home Page](Home)
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# Current Challenge: November 2025
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## "Wait, This Was Printed? How Are There No Layer Lines?"
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# Current Challenge: November 2025# Current Challenge: November 2025
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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!
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## Challenge Details
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### Materials & Constraints
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## "Wait, This Was Printed? How Are There No Layer Lines?"## "Wait, This Was Printed? How Are There No Layer Lines?"
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- **Filament**: 3D Fuel filament (any type: PLA+, Pro PLA+, PCTG etc.)
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- **Nozzle Requirement**: Must use a 0.4mm nozzle (REQUIRED)
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- **Estimated Filament Usage**: Approximately 3 grams (for reference only)
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- **Model Specification**:
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- **Dimensions**: Exactly 25mm x 25mm x 25mm cube (REQUIRED)
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- **Wall Count**: Exactly 2 walls (no more, no less) (REQUIRED)
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- **Top Layers**: 0 (no top surface)
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- **Bottom Layers**: Standard (as needed for proper adhesion)
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- **Infill**: 0% (hollow interior)
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- **Print Mode**: Standard FDM/FFF printing (no resin printing)
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### Competition Categories
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- **Smoothest Surface**: Best overall surface finish with minimal visible layer lines straight off the printer
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- **No post-processing allowed** - cubes must be judged as-printed
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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!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!
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### Judging Criteria
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1. **Layer Line Visibility** (100%): The appearance and visibility of layer lines - less visible is better
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- All cubes must meet basic challenge requirements (25mm cube dimensions, exactly 2 walls, 0.4mm nozzle, no post-processing)
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## Challenge Details## Challenge Details
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- Winner is determined solely by smoothness of surface and minimal layer line appearance
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### Materials & Constraints### Materials & Constraints
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- **Filament**: 3D Fuel filament (any type: PLA+, Pro PLA+, PCTG etc.)- **Filament**: 3D Fuel filament (any type: PLA+, Pro PLA+, PCTG etc.)
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- **Nozzle Requirement**: Must use a 0.4mm nozzle (REQUIRED)- **Nozzle Requirement**: Must use a 0.4mm nozzle (REQUIRED)
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- **Estimated Filament Usage**: Approximately 3 grams (for reference only)- **Estimated Filament Usage**: Approximately 3 grams (for reference only)
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- **Model Specification**:- **Model Specification**:
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- **Dimensions**: Exactly 25mm x 25mm x 25mm cube (REQUIRED) - **Dimensions**: Exactly 25mm x 25mm x 25mm cube (REQUIRED)
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- **Wall Count**: Exactly 2 walls (no more, no less) (REQUIRED) - **Wall Count**: Exactly 2 walls (no more, no less) (REQUIRED)
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- **Top Layers**: 0 (no top surface) - **Top Layers**: 0 (no top surface)
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- **Bottom Layers**: Standard (as needed for proper adhesion) - **Bottom Layers**: Standard (as needed for proper adhesion)
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- **Infill**: 0% (hollow interior) - **Infill**: 0% (hollow interior)
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- **Print Mode**: Standard FDM/FFF printing (no resin printing)- **Print Mode**: Standard FDM/FFF printing (no resin printing)
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### Competition Categories### Competition Categories
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- **Smoothest Surface**: Best overall surface finish with minimal visible layer lines straight off the printer- **Smoothest Surface**: Best overall surface finish with minimal visible layer lines straight off the printer
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- **No post-processing allowed** - cubes must be judged as-printed- **No post-processing allowed** - cubes must be judged as-printed
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### Judging Criteria### Judging Criteria
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1. **Layer Line Visibility** (100%): The appearance and visibility of layer lines - less visible is better1. **Layer Line Visibility** (100%): The appearance and visibility of layer lines - less visible is better
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- All cubes must meet basic challenge requirements (25mm cube dimensions, exactly 2 walls, 0.4mm nozzle, no post-processing) - All cubes must meet basic challenge requirements (25mm cube dimensions, exactly 2 walls, 0.4mm nozzle, no post-processing)
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- Winner is determined solely by smoothness of surface and minimal layer line appearance - Winner is determined solely by smoothness of surface and minimal layer line appearance
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- **Tiebreaker**: If two prints are too close to differentiate, the fastest print time wins - **Tiebreaker**: If two prints are too close to differentiate, the fastest print time wins
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4. **Challenge Adherence** (10%): Following material constraints and using supplied model
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### Submission Requirements
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### Submission Requirements
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### Submission Requirements
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- **Physical Model**: Bring your printed 25mm cube to the December meetup for judging
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- **Physical Model**: Bring your printed 25mm cube to the December meetup for judging
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- **Dimension Verification**: Must be exactly 25mm x 25mm x 25mm
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- **Wall Count Verification**: Must show exactly 2 walls when inspected
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- **Nozzle Verification**: Must be printed with 0.4mm nozzle
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- **Settings Documentation**: Share your winning settings (layer height, temperature, speed, cooling, techniques)
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- **Process Notes**: Brief description of your approach
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- **Dimension Verification**: Must be exactly 25mm x 25mm x 25mm- **Model Compliance**: Cylinder must measure 25mm diameter x 50mm height
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## Timeline
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- **Wall Count Verification**: Must show exactly 2 walls when inspected- **Vase Mode**: Must be printed in vase mode (single perimeter wall)
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- **Challenge Announcement**: November 12, 2025 (at November meetup)
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- **Submission Deadline**: December 10, 2025 (at December meetup)
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- **Nozzle Verification**: Must be printed with 0.4mm nozzle- **Weight Verification**: Should use approximately 6 grams of filament
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- **Judging Period**: December 10, 2025 (during December meetup)
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- **Winner Announcement**: December 10, 2025 (end of December meetup)
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- **Print Time**: Record and report your total print time (used as tiebreaker if needed)- **Documentation**: Include photos showing transparency (with light sources)
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- **Settings Documentation**: Share your winning settings (layer height, temperature, speed, cooling, techniques)- **Settings Documentation**: Share printer settings used (layer height, temperature, speed, etc.)
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- **Process Notes**: Brief description of your approach- **Process Notes**: Brief description of techniques used to achieve clarity
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## Timeline## Timeline
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- **Challenge Announcement**: November 12, 2025 (at November meetup)- **Challenge Announcement**: October 1, 2025
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- **Submission Deadline**: December 10, 2025 (at December meetup)- **Model Specification Released**: October 13, 2025
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- **Judging Period**: December 10, 2025 (during December meetup)- **Submission Deadline**: October 28, 2025
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- **Winner Announcement**: December 10, 2025 (end of December meetup)- **Judging Period**: October 29-30, 2025
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- **Winner Announcement**: October 31, 2025
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## Creating the Cube Model
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## Creating the Cube Model
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## Creating the Cylinder Model
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### Using the Provided Model
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### Using the Provided Model
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### Using Bambu Studio
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**Download the pre-configured cube:**
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**Download the pre-configured cube:**
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- **File Location**: [Challenge Files/November2025/Cube.3mf](https://meetup.fargo3d.com/Fargo3d/3DPrintMeetup/src/branch/master/Challenge%20Files/November2025/Cube.3mf)
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- **Pre-configured**: Already set to 25mm x 25mm x 25mm with 2 walls and no top
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- **Ready to slice**: Import into your slicer and adjust settings for your printer
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### Using Bambu Studio
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**Step 1: Add Primitive**
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**Step 1: Add Primitive**
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1. Open Bambu Studio to a new project
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- **File Location**: [Challenge Files/November2025/Cube.3mf](https://meetup.fargo3d.com/Fargo3d/3DPrintMeetup/src/branch/master/Challenge%20Files/November2025/Cube.3mf)1. Open Bambu Studio to a new project
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2. Right-click on the build plate
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- **Pre-configured**: Already set to 25mm x 25mm x 25mm with 2 walls and no top2. Right-click on the build plate
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- **Ready to slice**: Import into your slicer and adjust settings for your printer3. Select "Add Primitive"
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4. Select "Cylinder"
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### Creating from Scratch in Bambu Studio
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**Step 2: Resize the Cylinder**
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**Step 1: Add Primitive**1. Click to resize the cylinder
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2. Uncheck "uniform scale" if checked
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1. Open Bambu Studio to a new project3. Set X and Y to 25mm
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2. Right-click on the build plate4. Set Z to 50mm
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3. Select "Add Primitive"
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3. Select "Add Primitive"
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4. Select "Cube"
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4. Select "Cube"### Alternative Methods
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**Step 2: Resize the Cube**
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1. Click to resize the cube
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- **Fusion 360**: Create cylinder sketch, extrude to 50mm height
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2. Set X, Y, and Z to 25mm
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**Step 2: Resize the Cube**- **Tinkercad**: Use cylinder shape, adjust dimensions
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- **FreeCAD**: Create cylinder with specified dimensions
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1. Click to resize the cube- **Any CAD Software**: Simple cylinder 25mm diameter x 50mm height
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2. Set X to 25mm and Y and Z should also set to 25mm
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## Awards & Recognition
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### Alternative Methods
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### Alternative Methods
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- **Fusion 360**: Create square sketch (25mm x 25mm), extrude to 25mm height
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- **Tinkercad**: Use cube shape, adjust dimensions to 25mm x 25mm x 25mm
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- **FreeCAD**: Create cube with specified dimensions
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- **Any CAD Software**: Simple cube 25mm x 25mm x 25mm
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## Awards & Recognition
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### Awards
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### Awards
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- **Fusion 360**: Create square sketch (25mm x 25mm), extrude to 25mm height- **PCTG Division Winner**: Recognition + prize
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- **Smoothest Surface Winner**: Best layer-line elimination straight off the printer
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- **Tinkercad**: Use cube shape, adjust dimensions to 25mm x 25mm x 25mm- **PLA Division Winner**: Recognition + prize
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- **FreeCAD**: Create cube with specified dimensions- **Overall "Glass Master" Winner**: Grand prize + recognition
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- **Any CAD Software**: Simple cube 25mm x 25mm x 25mm- **People's Choice Award**: Community favorite
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- **Innovation Award**: Most creative clarity technique
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## Awards & Recognition
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### Documentation
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### Awards- Winner photos for social media sharing
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- Video documentation of winning techniques
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- **Smoothest Surface Winner**: Best layer-line elimination straight off the printer- Settings and process sharing for community learning
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- **People's Choice Award**: Community favorite
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- **People's Choice Award**: Community favorite
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### Documentation
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### Documentation
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Reference in New Issue
Block a user