Preparing Your First Print

You have Bambu Studio installed and your printer connected. Now comes the fun part - taking a 3D model file and turning it into something your printer can actually build.

This lesson will walk you through the entire process: importing a model, choosing the right settings, slicing it, and reading the preview so you know what to expect before you hit print.

Getting a 3D Model File

First things first - you need a 3D model to print. There are several ways to get one:

Download a free model from a community site:
- Printables - Huge library of free, community-shared models
- Thingiverse - One of the oldest and largest 3D model repositories
- MakerWorld - Bambu Lab's own model sharing platform with print profiles included

Create one with AI:
- PrintPal - Generate 3D models from text descriptions or images using AI (check out our "3D Design with AI" course to learn how!)

Design your own:
- Tools like TinkerCAD, Fusion 360, or Blender let you model from scratch (that's a topic for another course)

For your very first print, we recommend downloading a simple, tested model from MakerWorld or Printables. Search for something like "benchy" (a classic test boat), "calibration cube," or any simple object that catches your eye.

Look for files ending in .STL, .3MF, or .OBJ - these are the standard 3D model formats that Bambu Studio can open.

Tip: .3MF files from MakerWorld often come with print settings already included, which makes your first print even easier. If you find a .3MF file specifically made for your printer, that's a great starting point.

Importing Your Model

Open Bambu Studio and make sure you're starting fresh:

1. Click "New Project" to create a clean workspace
2. Import your model using one of these methods:
3. Click the Add icon (the plus or import button) on the top toolbar
4. Drag and drop the file directly from your file explorer into the Bambu Studio window
5. Use File -> Import from the menu

Your model will appear on the virtual build plate in the 3D viewport. You should see it sitting in the center of the plate, ready to be configured.

Take a moment to look at it. Use your mouse to rotate the view (right-click and drag), zoom in and out (scroll wheel), and pan around (middle-click and drag). Get comfortable with navigating the viewport - you'll be doing this a lot.

Choosing Your Settings

This is the most important part of the process. The right side of the screen has three dropdown menus that control everything about how your model will be printed:

1. Printer

Select your specific Bambu Lab printer model from the dropdown. This tells the slicer what build volume is available, what speeds the printer can handle, and what features to use.

Make sure the nozzle size shown matches what you have installed. For most users, this will be 0.4mm - the standard nozzle that comes with the printer.

2. Filament

Select the type of filament you have loaded in your printer. If you followed our earlier advice and have PLA, choose Bambu PLA Basic or the specific PLA brand you're using.

Getting the filament type right is crucial because it determines the printing temperature. PLA prints around 200-220 degrees C, while PETG needs 230-250 degrees C. Using the wrong profile could mean your filament doesn't melt properly or melts too much.

3. Process (Layer Height)

This controls how thick each individual layer will be. The options typically look like this:

• 0.28mm - Draft quality. Fast printing, visible layer lines. Good for quick prototypes or models where appearance doesn't matter much.
• 0.20mm - Standard quality. A great balance of speed and appearance. This is the best choice for most prints, and we recommend it for your first print.
• 0.16mm - Fine quality. Smoother surfaces but takes noticeably longer.
• 0.12mm - Extra fine. Very smooth surfaces, significantly longer print times. Best reserved for display models or detailed miniatures.
• 0.08mm - Ultra fine. The smoothest finish possible, but extremely slow. Rarely needed.

For your first print, choose 0.20mm Standard. It gives you good results without making you wait too long.

Positioning and Scaling Your Model

Before slicing, take a moment to make sure your model is positioned well on the build plate:

Is it sitting flat? Most models should sit flat on the build plate for the best results. If your model appears to be floating or tilted, right-click on it and look for "Lay on Face" or "Auto Orient" options that will align it properly.

Is it the right size? Check whether the model dimensions make sense. You can see the size in the info panel, or select the model and look at the dimensions shown. If you need to change the size, use the Scale tool - but be careful about scaling too small (thin walls might not print) or too large (might not fit the build plate).

Is it centered on the plate? The model should be somewhere on the build plate, not hanging off the edges. You can click and drag it to reposition, or right-click and choose "Center" to put it in the middle.

Slicing: The Magic Step

Once your model is placed and your settings are chosen, it's time to slice. Click the "Slice plate" button in the upper right corner of Bambu Studio.

The slicer will take your 3D model and compute every single movement the printer needs to make. This includes:
- How to draw each layer
- Where to put solid walls and where to use internal fill patterns
- How fast to move for each section
- When and where to add support material (if needed)
- How to handle overhangs and bridges

This process usually takes a few seconds, and when it's done, Bambu Studio switches to the Preview view.

Reading the Preview

The preview is your chance to see what the printer will actually do before committing to a print. Take some time to explore it:

The Layer Slider - On the right side of the preview, there's a vertical slider. Drag it up and down to scrub through the layers one at a time. This lets you see exactly what each layer looks like, from the first layer on the build plate to the very top of your model.

Print Time Estimate - The preview shows you approximately how long the print will take and how much filament it will use. For a small object at 0.20mm layer height, you might see times ranging from 20 minutes to a couple of hours.

Color Coding - The preview uses different colors to show different parts of the print:
- Outer walls - The visible surface of your model
- Inner walls - Structural walls just inside the outer surface
- Infill - The internal fill pattern (usually a grid or honeycomb) that gives your model strength without using too much material
- Support - Any support material the slicer added to hold up overhanging parts

Scrub through the layers and look for anything that seems wrong. Does the first layer look solid and connected? Do the walls look continuous? If something looks off, you can go back to the model view and adjust before printing.

What the Key Settings Actually Mean

Now that you've sliced your first model, let's quickly understand what the slicer decided for you behind the scenes. These are the default settings that Bambu Studio applied automatically:

Wall Loops (2-3) - How many outlines are drawn on each layer. More walls = stronger and better looking, but slower. The default of 2-3 is great for most prints.

Infill (15-20%) - How solid the inside of your model is. 15% means it's mostly hollow with a supporting grid pattern inside. That's fine for decorative objects. For functional parts that need strength, you might increase this to 30-50%.

Top/Bottom Layers (3-4) - How many solid layers are printed at the very top and bottom of your model. This ensures the top and bottom surfaces look solid and smooth, even though the inside is partially hollow.

Print Speed - Bambu Lab printers are known for speed. The default profiles are already optimized for your specific printer, so you typically don't need to change this.

For your first print, leave all of these at their defaults. The standard profiles that come with Bambu Studio are well-tuned and will give you great results right out of the box.

Ready to Print

Your model is imported, your settings are chosen, and the preview looks good. You now understand what the slicer is doing and what all those layers mean.

In the next lesson, we're going to send this print to your Bambu Lab printer and watch it come to life. Get your filament loaded and your printer turned on - it's almost time.