Bambu Studio ships with profiles for hundreds of filaments, but most of those profiles are generalised starting points. Your specific reel of eSUN Matte Black PLA in South Florida humidity in July behaves slightly differently from Bambu’s profile for Generic PLA. Creating a custom profile saves your tested settings and eliminates redialling every time you switch materials. Here’s how to do it efficiently.
When You Need a Custom Profile
Most new Bambu Lab printer owners don’t need custom profiles for the first month or two. The preset profiles for Bambu Lab’s own filaments are excellent, and Generic PLA works well as a starting point for most third-party PLA brands.
Custom profiles become worth creating when:
- You’ve found specific temperature or speed settings that consistently produce better results than the preset for a particular filament brand
- You’re using a material type with no close preset match (a specialty TPU, a filled nylon, an unusual silk blend)
- You want to save different quality levels for the same filament (a “fast draft” and a “high detail” version of your standard matte PLA)
- You’re dialing in a new filament with Orca Slicer’s calibration tools and want to save the results
How to Create a Custom Filament Profile in Bambu Studio
- Open Bambu Studio and start a new project or open an existing one.
- In the left panel, click the filament dropdown and select the closest existing preset to your actual filament. For a third-party matte PLA, select Bambu PLA Matte or Generic PLA Matte. This gives you a starting configuration that’s close to what you need.
- Click the edit icon (pencil) next to the filament name. This opens the filament settings panel.
- Adjust the settings based on your tested values. The key parameters to modify are: Nozzle temperature (min and max), Bed temperature, Filament density (affects accurate weight estimation), and any specific retraction or flow adjustments if you’ve calibrated them.
- Save as a new profile. Click the Save As button at the top of the filament panel. Name your profile with something specific: “eSUN PLA Matte 215C Tested” or “Bambu Matte Black – Draft Speed.” Specific names are much more useful than “My PLA” when you have several profiles saved.
- The new profile appears in your filament dropdown. It persists between sessions and syncs to Bambu Cloud if you’re logged in.
Key Settings to Customise in Your Filament Profile
| Parameter | What to Set | How to Know the Right Value |
|---|---|---|
| Nozzle temperature | Min and max values based on testing | Run a temperature tower. Use Orca Slicer’s built-in temp tower generator for a systematic result. |
| Bed temperature | Temperature that gives reliable adhesion and clean release | Start from material defaults. Adjust in 5°C steps based on adhesion results. See bed adhesion guide. |
| Flow ratio | Multiplier on extrusion volume (default 1.0) | Run Orca’s flow rate calibration test. Small adjustments (0.95-1.05) correct over or under-extrusion from filament diameter variation. |
| Max volumetric speed | Max mm3/s the filament can flow reliably | Run Orca’s volumetric speed calibration. Limits the printer’s speed intelligently rather than requiring per-setting speed adjustments. |
| Retraction | Distance and speed tuned for this specific filament | Run a retraction test tower. More detail at the stringing fix guide. |
Creating Profiles for Multiple Quality Levels
One of the most useful custom profile strategies is creating two or three quality-level variants for your main working filament. For example, with your standard matte PLA:
- Matte PLA – Standard (0.2mm, 150mm/s walls): Your daily driver for most prints
- Matte PLA – Fine (0.12mm, 100mm/s walls): For dollhouse miniatures, detailed cosplay accessories, and deck box caps with fine embossing
- Matte PLA – Draft (0.28mm, 200mm/s walls): For large structural parts, prototypes, and anything where speed matters more than surface quality
These profiles differ primarily in layer height and wall speed. Having them named and ready in the dropdown means switching quality levels is a single click rather than manually changing three settings. The PLA settings reference has the specific values for each level.
Backing Up and Sharing Profiles
Custom profiles in Bambu Studio sync to Bambu Cloud if you’re logged in, which means they persist across reinstalls and are available on other computers with your account. Useful if you have multiple Bambu machines or reinstall your OS.
To export a profile for backup or sharing: in the filament panel with your custom profile selected, click the export icon and save as a JSON file. To share with another maker, send them the JSON file; they import it through the same import icon. Profiles shared this way retain all your calibrated values, which is particularly valuable if you’ve done thorough Orca calibration on a specific brand.
Frequently Asked Questions: Custom Filament Profiles in Bambu Studio
How do I save a filament profile in Bambu Studio?
Open the filament settings (edit icon next to the filament dropdown), adjust your settings, then click Save As and give the profile a specific name. It saves immediately and appears in your filament dropdown for future projects.
Do custom profiles sync between computers?
Yes, if you’re logged into your Bambu Lab account. Profiles sync to Bambu Cloud and are available on any computer where you’re logged into Bambu Studio with the same account.
What is the flow ratio setting in Bambu Studio?
Flow ratio is a multiplier on the calculated extrusion volume. A flow ratio of 1.0 (100%) means the printer extrudes exactly what the slicer calculates. A ratio of 0.96 means it extrudes 4% less. Small adjustments in the 0.95-1.05 range correct for differences in actual versus nominal filament diameter or material-specific flow characteristics. Run an Orca Slicer flow calibration test to find the right value for a specific filament.
Should I create separate profiles for different colors of the same filament?
Usually not necessary. Color rarely affects print settings significantly within the same filament range. The exception is very dark pigmented filaments (some deep blacks or saturated colors) that absorb more heat during printing and may benefit from a 3-5°C temperature reduction. If you notice consistent quality differences between colors from the same brand, a color-specific profile is worth creating for the outlier.
