How do I stop my PETG from warping off the bed?

When it comes to 3D printing, issues with PETG detaching or bending from the print platform are common. As a passionate tech enthusiast named Carolina, I felt the need to share some insights on handling this challenge. Curious about the causes behind PETG deformation on the print platform?


The primary reason behind PETG’s distortion is its tendency to contract as it cools post-heating. This contraction can result in the print’s corners elevating from the platform. As subsequent layers accumulate, the strain on the foundational layer intensifies, amplifying the distortion risk.

In a fascinating clip, CNC Kitchen highlighted the general causes behind 3D prints distorting. Delving deeper, here’s how to address PETG bending or detaching from the platform:

1. Align the Platform:
A pivotal solution to prevent PETG distortions is ensuring your platform’s precise alignment. A correctly aligned platform enhances the initial layer’s adherence, crucial for a successful print.

2. Purify the Platform:
A clutter-free platform is vital. Impurities can hinder the print’s attachment to the platform, thus regular cleaning is essential. Using isopropyl alcohol on a lint-free cloth can achieve this. Additionally, for residue removal, heat the platform to about 80°C and gently wipe.

3. Apply Platform Adhesives:
Enhancing print adherence sometimes requires adhesives. From hair sprays to glue sticks, there’s an array to pick from. My personal preference? The uncomplicated Elmer’s Disappearing Glue Stick. But if you’re seeking specialized solutions, the LAYERNEER 3D Printer Adhesive Glue is a top contender.

4. Modify Initial Layer Metrics:
Enhancing the Initial Layer Height and Initial Layer Flow can boost adherence, curbing potential distortions. Experiment with these metrics in your slicer settings, like Cura, to attain optimal outcomes.

5. Implement a Brim, Raft, or Anti-Warping Discs:
These add-ons can significantly increase the print’s contact area with the platform, ensuring better adherence.

6. Augment Platform Heat:
A toasty platform can facilitate PETG’s adherence. Aim for a range between 70-90°C, adjusting based on your PETG variant.

7. Encase the 3D Printer:
Printer enclosures help maintain consistent internal temperatures, minimizing rapid PETG cooling and consequent shrinkage.

8. Deactivate Initial Layer Cooling Fans:
By restraining the cooling fans during the early layers, you ensure the filament doesn’t chill too swiftly, reducing shrinkage chances.

9. Throttle Printing Speed:
Slower prints can boost layer cohesion, giving the filament ample time to melt and adhere seamlessly. Finding the right balance of speed is key.

Tackling specific PETG issues?

For Initial Layer Deformations: maintain cooling below 30% and ensure bed leveling. Moreover, platform adhesives like glue sticks can be effective.

Regarding Infill Distortions: moderate your infill print speed and ensure optimal print temperature. Also, ensure nozzle cleanliness and tightness.

For challenges with PETG Raft Elevations:, controlling the print environment’s temperature through enclosures can be pivotal. General PETG distortion remedies are equally effective for rafts.

To deepen your understanding of PETG printing and avoid potential pitfalls, immerse yourself in the comprehensive guide video available on PETG best practices.

From your tech trainee, Carolina