Gaps between Infill and Outline How to Fix it Now

Master the art of perfect 3D prints! Discover expert tips to eliminate gaps between infill and outline, ensuring flawless 3D printing results.

by Editorial Staff: We are a team of 3D Printing Enthusiasts who have build a lot of knowledge about 3D Printing the last 8 years. Our aim is to create the knowledge hub for 3D Printing covering all minor and major topics. Providing one source of reliable Information for everybody regardless of Beginner or Expert.

A common issue faced in this process is the appearance of small gaps between Infill and the perimeters, which can significantly affect the quality of the print. This article delves into the causes of these gaps and provides comprehensive solutions.

Common Causes for Infill and Outline Gaps

These gaps can be a result of various factors such as print speed, improper calibration, and infill/outline overlap settings. Understanding these underlying causes is the first step toward achieving flawless prints.

Step-by-Step Guide to Fix Infill and Outline Gaps

  1. Adjust the Print Speed: Printing too fast can lead to layer shifting and poor print quality. High speed may cause the belts to slip over the cogwheel/drive pulleys, misaligning the tool head/hotend. It’s advisable to reduce the speed to 1800 mm/min or 30 mm/s from the common 3600 mm/min or 60 mm/s, and then gradually increase it to find the optimum speed for quality and efficiency.
  2. Optimize Infill/Outline Overlap: Reducing layer height in your slicer software can enhance the print’s stability, especially for overhangs or when trying to minimize support structures.
  3. Check Printer Calibration: Ensure that your printer is calibrated correctly. Misalignment can lead to uneven layers, contributing to the formation of gaps.

Advanced Tips to Prevent Infill and Outline Gaps

  • Material Quality: High-quality materials are less prone to inconsistencies, leading to better print quality.
  • Regular Maintenance: Maintaining your printer ensures all parts function optimally, reducing the chances of print imperfections.


Why do gaps occur?

Gaps are typically due to print speed, temperature settings, material quality, or infill/outline overlap.

Adjusting printer settings?

Modifying print speed, temperature, and infill/outline overlap can help reduce gaps.

Materials prone to gaps?

Lower quality or highly flexible materials might pose more issues.

Impact of print speed?

High speed can cause gaps; reducing speed often improves quality.

Can software settings reduce gaps?

Yes, tweaking slicer software settings can significantly enhance print quality.


Tackling the issue of gaps between infill and outline is essential for high-quality 3D prints. Through careful calibration, speed adjustments, and understanding material properties, you can enhance your printing results significantly. Embrace these challenges as opportunities to refine your 3D printing skills.

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