First Layer Test – Circle

Improve your 3D printer's first layer with the First Layer Test – Circle!

This simple calibration model uses circular patterns to help you evaluate first-layer adhesion, extrusion consistency, and Z-offset settings.

Unlike traditional square calibration tests, circular shapes allow you to inspect how consistently your printer lays down filament along curved paths.

Features

• Circular first-layer calibration patterns
• Helps identify uneven extrusion and adhesion problems
• Useful for checking Z-offset and first-layer consistency
• Quick and easy to print
• Low filament consumption
• No supports required
• Suitable for most FDM 3D printers

Recommended Print Settings

• Nozzle: 0.4 mm
• Layer Height: 0.20 mm
• Material: PLA or PETG
• First Layer Speed: 20–30 mm/s
• Supports: Disabled
• Raft: Disabled
• Ironing: Disabled

How to Read the Results

Perfect First Layer: Smooth, consistent circular patterns with well-connected extrusion lines.

Gaps Between Lines: May indicate insufficient first-layer squish or under-extrusion.

Rough or Raised Surfaces: May indicate excessive first-layer squish or over-extrusion.

Poor Adhesion Around Curves: Check bed cleanliness, Z-offset, temperature, and first-layer speed.

Inconsistent Circular Patterns: May indicate uneven extrusion or motion-related issues.

Why Use This Test?

A reliable first layer is essential for successful 3D printing.

The First Layer Test – Circle provides a quick way to inspect curved extrusion paths and identify potential printing problems before starting larger projects.

Part of the ModuSlide First Layer Calibration Series.

Designed by ModuSlide

Happy printing!