This is a simple but effective diagnostic model designed to help identify Z-banding and Vertical Fine Artifacts (VFA) on FDM 3D printers.
The model consists of a tall, smooth-walled cylinder with a uniform surface and a small base for stability. Its geometry is intentionally minimal to eliminate variables and make even subtle surface inconsistencies clearly visible.
Note: please check my other model with tall cube, both tests should be performed to make sure your printer works reliably.
What this model helps you detect:
- Z-banding (Z-wobble): repeating horizontal patterns caused by lead screw imperfections, misalignment, or inconsistent Z motion.
- VFA (Vertical Fine Artifacts): vertical surface patterns often related to motion system issues, belt tension, stepper behavior, or extrusion inconsistencies.
Why this design works:
- Continuous vertical walls amplify periodic artifacts
- No complex features to mask defects
- Tall structure increases visibility of repeating patterns
- Uniform cross-section ensures consistent printing conditions
Recommended print settings:
- Use standard profile (no special tuning at first)
- 0.2 mm layer height (or your typical setting)
- 2–3 walls
- Minimal or no infill (not important for this test)
- Print at normal speeds to reflect real-world conditions
Tips:
- Use good lighting (side lighting works best) to inspect surface artifacts
- Compare results after mechanical adjustments (lubrication, belt tension, alignment)
• • Try different speeds and accelerations to isolate VFA sources
Boost MeIf my model helped you, consider boosting me, it helps me a lot!
Lukasz Burak
