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From pellets to spool – all under one roof

In Ljubljana, we bring together compounding, extrusion, winding and quality control. In-house production allows us to control the material composition and track each batch from raw material to packaged spool.

How our filament is made

  1. Raw material selectionWe start with proven polymers. Each filament batch can be traced back to the compound batch it was made from.
  2. DryingWe dry the material before processing because moisture causes bubbles, brittleness and an uneven diameter.
  3. CompoundingWe mix the polymer with colourants, additives or fillers using our own formulation. This is where we create colours, matte and silk effects, and reinforced materials such as ASA-CF.
  4. ExtrusionThe melt passes through a die and a cooling bath. A laser gauge continuously measures diameter and ovality. Filament outside the ±0.03 mm tolerance does not go onto a spool.
  5. WindingWe wind under controlled tension and inspect every spool to support smooth unwinding during printing.
  6. Quality controlWe test-print every batch on our production printers, compare the colour with a reference spool and check moisture content before packaging.
  7. PackagingShortly after extrusion, we seal the spool in a vacuum bag with desiccant. The label lists the material, colour, diameter, net weight and batch.

How we control quality

  • Diameter tolerance±0.03 mm for 1.75 mm and 2.85 mm
  • Diameter and ovalitycontinuous laser measurement on the production line
  • Traceabilitythe batch on the label links to the compound batch; an unopened spool has a shelf life of 24 months
  • Every batch is test-printed; we develop materials on Bambu Lab, Prusa, Creality, Anycubic and Elegoo printers

The materials we make

Our range includes four material families. PLA: PLA, PLA Matte, PLA Matte HS, HTPRO-PLA, Silk, Wood, PLA CF, Lithophane and Recycled PLA. PETG and PCTG: PETG, PET-G Matte, PCTG, PCTG Matte, PETG CF and Recycled PETG. ABS and ASA: ABS Plus, ABS FR V0, ABS GF, ABS ESD, PC-ABS UL94 V0, ASA Plus and ASA CF. Technical materials: TPU 90A, TPU CF Flex, Nylon PA-12, PAHT CF, ESD HIPS, HIPS and PVA. For each range, we provide a technical data sheet with mechanical and thermal values, test methods and a recommended starting profile.

Why it matters for your prints

A consistent diameter means a consistent flow. Dry material means less stringing and fewer bubbles. Batch traceability helps us with repeat orders and technical enquiries. These are differences you can see in the printed part.