Your First 3D Print on the Bambu Lab A1 Mini

What You Need

Step-by-Step Instructions

1. Step 1 Unbox and Assemble the A1 Mini

   Remove the A1 Mini from its box and take off all protective foam, zip ties, and transit clips. The printer ships nearly fully assembled — you only need to attach the spool holder and the filament runout sensor cable.

   Mount the spool holder onto the rear bracket and route the PTFE tube from the spool holder into the extruder inlet. Plug in the power cable and press the button on the front of the toolhead to power on. The A1 Mini runs a self-check on first boot, testing the motors and sensors automatically.

   Place the printer on a flat, stable surface. The textured PEI build plate should already be seated on the magnetic bed. Verify it sits flat with no warping by pressing gently on each corner. The A1 Mini's build volume is 180x180x180mm — compact but large enough for most beginner projects.

   Tip: Keep the box and foam inserts. If you ever need to ship the printer for warranty service, the original packaging protects it far better than improvised packing.

2. Step 2 Load PLA Filament

   Place a spool of PLA filament on the spool holder with the filament unwinding from the bottom of the spool (counterclockwise when viewed from the right side). Cut the filament tip at a 45-degree angle using flush cutters or scissors — a clean, angled tip feeds into the extruder much more reliably than a blunt cut.

   On the printer's touchscreen, navigate to Settings and then Filament. Select Load and choose PLA as the filament type. The printer heats the nozzle to 220 degrees C and the extruder gears pull the filament through the PTFE tube into the hotend. Wait until filament extrudes cleanly from the nozzle — you should see a thin, consistent strand of melted plastic.

   PLA is the ideal starter filament. It prints at low temperatures (200-220 degrees C nozzle, 55-65 degrees C bed), produces minimal odor, and is forgiving of imperfect settings. Bambu Lab's own PLA Basic spool is pre-profiled in Bambu Studio, so temperatures and speeds are already optimized. Third-party PLA works fine but may need 5-10 degrees C adjustments.

   Tip: If filament grinds or clicks during loading, pull it back out, re-cut the tip, and try again. A jagged filament end is the most common cause of failed loading on any printer.

3. Step 3 Install and Configure Bambu Studio

   Download Bambu Studio from bambulab.com/en/download/studio and install it on your computer (Windows, macOS, or Linux). On first launch, the setup wizard asks you to select your printer model — choose A1 Mini. Check all filament types when prompted; this makes them available in the slicer later without affecting your current print.

   Create a Bambu Lab account or sign in if you already have one. The account links your printer to Bambu Studio over your local network or Bambu Cloud, letting you send print files wirelessly. Connect your A1 Mini to the same WiFi network using the printer's touchscreen (Settings then Network), then it appears automatically in Bambu Studio's device list.

   The Bambu Studio interface has three main areas: the 3D viewport where you position models, the right sidebar where you select printer, plate type, and filament presets, and the top toolbar for importing files. For your first print, the only preset you need to change is the filament — select Bambu PLA Basic or Generic PLA.

   Tip: Bind the printer to your account by scanning the QR code on the printer's touchscreen with the Bambu Handy phone app. This also lets you monitor prints remotely via the built-in camera.

4. Step 4 Slice Your First Model

   Click the Import button in Bambu Studio's top toolbar and load a 3D model file (STL or 3MF). For your very first print, use the Benchy tugboat — download it from MakerWorld (makerworld.com) by searching for "Original 3D Benchy." The Benchy tests overhangs, bridging, small details, and dimensional accuracy all in one 30-40 minute print.

   With the model loaded in the viewport, verify these settings in the right sidebar: Printer is A1 Mini, Plate Type is Textured PEI Plate, and Filament is your loaded PLA. Leave the print profile at 0.20mm Standard Quality for your first print. This layer height balances speed and quality — a Benchy prints in about 35-40 minutes at standard speed.

   Click the Slice button at the bottom right. Bambu Studio generates the toolpath and shows a time estimate, filament usage, and a layer-by-layer preview. Scrub through the preview layers to verify the model looks correct — no floating sections, no missing walls. When satisfied, click Print Plate to send the job wirelessly to your A1 Mini.

   Tip: The A1 Mini also ships with a pre-sliced SpeedBoatRace Benchy on internal storage that prints in about 13 minutes. It is a fun speed demo, but the standard-sliced Benchy is a better diagnostic for print quality.

5. Step 5 Start the Print and Monitor Progress

   When you send a print job from Bambu Studio, the A1 Mini begins its automatic startup sequence. The printer heats the nozzle and bed to the temperatures defined in the filament profile — typically 220 degrees C nozzle and 55 degrees C bed for PLA. It then runs an automatic bed leveling routine using its eddy current sensor, probing multiple points to map the bed surface.

   Watch the first layer carefully. This is the most critical phase of any 3D print. The filament should be pressed firmly onto the textured PEI plate in smooth, even lines with no gaps between them. If the first layer looks translucent or the lines are not sticking, the nozzle may be too far from the bed — use the micro-adjustment (Z offset) in Bambu Studio or on the printer's touchscreen to lower the nozzle in -0.05mm increments.

   Once the first layer completes successfully, the rest of the print is largely autonomous. The A1 Mini's built-in camera sends a live feed to Bambu Studio and the Bambu Handy app so you can monitor progress remotely. A standard Benchy at 0.20mm layer height takes 35-40 minutes. Resist the urge to touch the print or open nearby windows — drafts cause warping on taller prints.

   Tip: If the first layer peels up or does not stick at all, clean the PEI plate with isopropyl alcohol (90% or higher) and a lint-free cloth. Oils from fingerprints are the number one cause of adhesion failure on textured PEI.

6. Step 6 Remove the Print and Inspect Quality

   When the print finishes, the bed cools automatically. Wait until the bed temperature drops below 30 degrees C — PLA parts often pop off the textured PEI plate on their own as it cools. If the part is still stuck, flex the magnetic build plate gently by lifting one corner. Never use metal tools to pry prints off the PEI surface — you will scratch the coating.

   Inspect your Benchy for common first-print issues. Elephant foot (a slight bulge at the very bottom of the print) means the first layer was slightly too squished — increase Z offset by +0.05mm on your next print, or enable elephant foot compensation in Bambu Studio (set to 0.1-0.2mm). Stringing (thin whiskers of plastic between features) is common with PLA but should be minimal — if excessive, verify your filament is dry and the retraction settings in the filament profile are correct.

   Layer lines should be uniform with no gaps or blobs. If you see gaps in the top surface, increase the number of top layers to 5 in Bambu Studio. If walls have visible seams, try setting the seam position to "nearest" or "rear" in the slicer. A well-tuned A1 Mini produces excellent results straight out of the box — most users find their first Benchy needs no settings changes at all.

   Tip: Keep your first Benchy. Print another one after a month of use and compare them side by side — it is the fastest way to detect gradual wear like nozzle degradation or belt loosening.

Frequently Asked Questions