Noob: Why does model vanish?

Bambu Lab Software Bambu Studio
1

This is my first try at 3D printing. I have an A1-mini. To play around with Bambu Studio (2.7.1.62), I loaded the Bambu scraper .3mf file to play with. I saw that there were two filaments shown, white for the main scraper, and black for the logo. I only have one color, so I thought I would tweak the project to use one filament. I tried changing the 2nd filament setting and, to my surprise, it always resulted in the entire model disappearing. I tried:

  • Select white for filament 2.
  • Delete filament 2.
  • Merge 2 with filament 1.
  • Synchronize filament list (with A1-mini).

Can anyone help me understand how these settings work? Why did the model completely disappear?

2

Have you tried printing the entire model one color instead?

3

Maybe you could upload the 3D model, the 3MF file, directly to the forum; it’s a bit difficult to evaluate without it. Possible causes:

  • The model is plain and simply defective
  • The model has shifted off the print plate
  • The grouping is incorrect
  • The font / logo is so small that the slicer can’t process it.

As I said, for a thorough analysis, we would need the 3MF files. Photos would be a good place to start.

Take a close look to see if there’s a red ! next to your object, and if necessary, click “Fix Object.”

Screenshot 2026-07-15 141730
Screenshot 2026-07-15 141730936×722 31 KB

4

That’s what they are trying to do. “I only have one color, so I thought I would tweak the project to use one filament.”

I only use Orca Slicer, so I don’t know why Bambu Slicer wouldn’t just slice with 1 filament, seeing as they are similar slicers.

@user_1991093284 Are you changing the colour of the filament in the Objects tab or are you doing it withing the Filaments area?

5

I printed the file without changing it and it worked; it just replaced the second color with the one color I had. The purpose of this question is to understand why these setting behave the way they do. I will be designing and printing my own models, and it would be nice to understand how all of the software works.

6

Scraper Grip by Bambu Lab.gcode.3mf (508.7 KB)

Model attached. It’s just the one that comes on the Bambu A1-mini SD card.

I don’t get a list of objects, just “Plate 1” and “Outside” with nothing inside them. I also can’t click anything in the preview window.

7

So the first thing I notice is that the file is copy-protected: You can’t save it. That’s why the object disappears as soon as you make a change.

Screenshot 2026-07-15 181652
Screenshot 2026-07-15 181652632×342 9.32 KB

Why? Because that’s probably just the G-code and not the complete 3MF file. That’s why the file is named .gcode.3mf and not just .3mf

The problem is basically this: You copied the finished g-code from the SD card, but you want to make changes to the project, so you need the complete project.

Download the complete project = problem solved. :+1:

Screenshot 2026-07-15 181954
Screenshot 2026-07-15 181954639×333 10 KB

8

Ah ha! Lesson learned. Thank you.