A Complete Guide to Creating Your Own Filament Profile in PrusaSlicer from Scratch

You’ve got a new spool in hand, but you can’t find an exact match in PrusaSlicer’s preset list. This is precisely the moment when creating your own PrusaSlicer filament profile becomes the healthiest way to take control of your print quality rather than leaving it to guesswork. Below, we walk you through, step by step, how to build a solid profile starting from a blank page — grounded in manufacturer values and your own test prints.

Switch to Expert mode first

To see all filament settings, you need to set the mode selector in the top-right corner to Expert. In Simple and Advanced modes, critical fields such as flow rate, pressure advance, and cooling thresholds remain hidden. When starting a new profile, it is much safer to take an existing profile for a similar material as a reference and save over it, rather than writing everything from scratch.

Temperature and flow: the first three parameters

The backbone of your profile consists of these three headings. Start with the manufacturer’s range shown on the spool label, then narrow it down with your own tests:

• Nozzle temperature: Start from the middle of the manufacturer’s range; print a temperature tower and choose the value that produces the cleanest layers.
• Bed temperature: For PLA, the 55–60 °C range and for PETG the 70–85 °C range typically strikes a balance between adhesion and warping.
• Flow rate (flow / extrusion multiplier): Print a single-wall cube, measure the wall thickness, and fine-tune around 1.0; too much flow causes corner ooze, too little causes gaps.

Cooling and retraction

In the Cooling tab, set the fan speed according to your material. PLA likes plenty of airflow, while PETG and especially ABS lose layer adhesion with excessive cooling. Retraction values technically belong to the printer/extruder profile, but a filament’s viscosity directly affects stringing; for this reason, printing a short retraction test with a new material is always worthwhile.

Naming and saving the profile

Once you’ve dialed in the settings, click the floppy-disk icon and save the profile with a clear name. Adding brand, material, and colour information to the name (for example, “Brand X PETG Black 240C”) lets you find the right profile in seconds on future jobs. Once a profile is set up correctly, you’ll get consistent results on every print from that same spool.

Calibrating your own profile takes time; if you only need a few parts or want guaranteed results, working with proven, ready-made profiles may be more practical. You can check our production pricing page for the materials we use and current unit rates, and send us your model to get a quick quote.

If you get stuck on any point while setting up your profile, feel free to reach out to us for material-specific advice.