Fix Warping, Poor Overhangs, and Blobbing on PETG in OrcaSlicer

Warping, poor overhangs, and blobbing are common issues when printing with PETG, especially on larger beds or complex geometries. This troubleshooting profile was generated from a real failed print and is specifically tuned for OrcaSlicer with PETG filament on the Anycubic Kobra 3 Max. If you’re looking to fix warping or stop poor overhangs and blobbing in OrcaSlicer, this profile addresses those exact problems.

Failures This Profile Fixes

• Warping
• Poor Overhangs
• Blobbing

The Original Failed Print

The original print suffered from sagging overhangs and corners that lifted up, leading to both poor overhang quality and noticeable warping.

How This Profile Resolves It

To fix warping on PETG, this profile carefully tunes bed and initial layer temperatures, with the bed set to 80°C for the first layer and 75°C for subsequent layers, helping parts stay adhered and reducing corner lift. For poor overhangs, the profile increases cooling fan speeds on overhangs and enables targeted cooling, while also optimizing print speeds and layer cooling times to support better bridging and overhang performance. Blobbing is addressed by fine-tuning retraction settings and enabling pressure advance, which helps control extrusion flow and reduces excess material buildup. These targeted adjustments work together to stop warping, improve overhangs, and minimize blobbing in OrcaSlicer with PETG.

Compatible Setup

This profile is tuned for OrcaSlicer, PETG filament (1.75mm), and the Anycubic Kobra 3 Max. It’s a strong starting point for similar printers or PETG setups using OrcaSlicer.

Frequently Asked Questions

• Why does PETG warp so much on large prints?PETG can warp if the bed temperature is too low or if cooling is too aggressive, especially on large surfaces. This profile increases bed temps and manages cooling to help fix warping.
• How can I improve overhangs with PETG in OrcaSlicer?Improving overhangs often requires tuning fan speeds and slowing down print speeds for those sections. This profile adjusts both to stop poor overhangs.
• What causes blobbing on PETG prints?Blobbing is usually due to over-extrusion or insufficient retraction. This profile uses pressure advance and optimized retraction to reduce blobbing.
• Will these settings help with corner lifting?Yes, the higher initial bed temperature and controlled cooling are designed to minimize corner lifting and fix warping on PETG prints.
• Is this profile only for the Anycubic Kobra 3 Max?While tuned for the Kobra 3 Max, it can be a helpful starting point for other printers using PETG in OrcaSlicer.

If you’re troubleshooting persistent warping, poor overhangs, or blobbing with PETG in OrcaSlicer, profiles like this one on SliceFoundry can help you get back to successful prints faster.

Put This Profile to Work

The best way to test a slicer profile is with the right model. Check out heman armor - a great match for PETG and a solid way to dial in these settings straight out of the box.