Bambu Studio: Locked Zag Infill Bug In V2.3.0.70

by Dimemap Team 49 views

Hey guys,

There's a discussion happening in the Bambu Lab community about a potential issue with the Locked Zag infill pattern in the latest Bambu Studio version (2.3.0.70). Users are reporting that the top and bottom shell layers are being ignored when this infill type is selected, leading to prints with no solid top or bottom. Let's dive into the details and see what's going on.

Issue Summary

In Bambu Studio version 2.3.0.70, the Locked Zag infill appears to be malfunctioning. Specifically, the software seems to disregard the specified number of top and bottom shell layers when slicing a model with this infill pattern. This results in prints that lack solid top and bottom surfaces, as if the shell layers were set to zero.

Details

  • Bambu Studio Version: 2.3.0.70
  • Source: Official Bambu Lab website
  • Operating System: Windows 11 x64
  • Printer: Irrelevant (issue is in the slicer)
  • Printer Firmware Version: Irrelevant (issue is in the slicer)

How to Reproduce the Issue

It's pretty straightforward to replicate this bug. Here’s a step-by-step guide:

  1. Load or Create a Model: You can use any model. A simple cube works perfectly for testing purposes.
  2. Apply Locked Zag Infill: Select the Locked Zag infill pattern under the sparse infill settings. The infill percentage and other parameters don't seem to affect the bug, so you can leave them at their default values.
  3. Slice the Model: Slice the model using the default settings.
  4. Inspect the Sliced Result: Examine the sliced model in the preview. You'll notice that the top and bottom layers are missing, even if you have specified a non-zero number of top and bottom shell layers.

Here are some visual examples of the problem:

Image of model setup

Image of sliced model with missing top layers

Image of sliced model with missing bottom layers

Actual Results

When you slice a model with the Locked Zag infill in version 2.3.0.70, the slicer ignores the specified values for "Top shell layers" and "Bottom shell layers". The resulting sliced model will have no solid top or bottom, as if these values were set to zero. If you proceed to print the model, the printed object will reflect the flawed slicing, resulting in a structurally unsound print.

Expected Results

Ideally, the Bambu Studio slicer should respect the user-defined values for "Top shell layers" and "Bottom shell layers" when using the Locked Zag infill. The sliced model should have the correct number of solid top and bottom layers, ensuring a structurally sound and visually complete print.

Possible Cause and Impact

This issue seems to be a bug introduced in version 2.3.0.70, as previous versions of Bambu Studio did not exhibit this behavior. The impact of this bug is significant, as it can lead to wasted filament and failed prints. Users relying on the Locked Zag infill for its specific properties will find it unusable until this issue is resolved. Additionally, this problem impacts the overall print quality and structural integrity of the printed parts, particularly for models that require strong and well-defined top and bottom surfaces.

User Reports and Experiences

Several users have reported similar experiences, confirming that this is not an isolated incident. Many have reverted to older versions of Bambu Studio to avoid this issue, while others are experimenting with alternative infill patterns. The general consensus is that this is a critical bug that needs to be addressed promptly by the Bambu Lab team.

Workarounds

While waiting for an official fix, here are a few workarounds you can try:

  • Use a Different Infill Pattern: Consider using another infill pattern, such as gyroid or honeycomb, which do not exhibit this issue. While they may not offer the exact same properties as Locked Zag, they can provide a solid infill structure.
  • Increase the Number of Top and Bottom Layers (Temporarily): As a temporary measure, you could try significantly increasing the number of top and bottom layers. This might partially compensate for the bug, but it will also increase print time and filament usage.
  • Revert to a Previous Version of Bambu Studio: If you have access to an older version of Bambu Studio (prior to 2.3.0.70), reverting to that version will eliminate the bug altogether.

Project File and Debug Log

For those wanting to examine the issue more closely, a sample project file has been provided:

This ZIP file contains the project file used to demonstrate the bug. You can load it into Bambu Studio 2.3.0.70 and slice it to reproduce the issue.

Conclusion and Call to Action

The Locked Zag infill bug in Bambu Studio version 2.3.0.70 is a serious issue that needs to be addressed by the developers. It leads to prints with missing top and bottom layers, which compromises the structural integrity and aesthetic appearance of the printed objects. Users are encouraged to report this issue to Bambu Lab through official channels and to use the workarounds mentioned above until a fix is released.

Hopefully, Bambu Lab will release a patch soon to resolve this problem and restore the functionality of the Locked Zag infill. Keep an eye on the official Bambu Lab website and forums for updates.