Looking for 2.85mm Diameter 3D Printing Filament in the UK?

2.85 mm filament may no longer be mainstream for most 3D printers, but for industries, universities, and large-format print users in the UK, it remains mission‑critical. Whether you’re using Ultimaker, BigRep, or other professional-grade 3D printing systems, you need filament that’s reliable, available, and sustainable.

At Filamentive, we stock PLA, PETG, Carbon Fibre PETG, and ASA in 2.85 mm diameter, including XL spools up to 8.5 kg, all available for next‑day UK delivery.

Why does 2.85 mm Diameter Filament Exist?

In the early days of 3D printing, there were no purpose-made materials available—makers had to use whatever was accessible. This meant both the type of material and its format were extremely limited. One practical solution was to use ABS welding rod, which was relatively easy to print with and commonly available. These rods typically measured around 3 mm in diameter, though they weren’t manufactured with the precision needed for 3D printing.

As 3D printer designs evolved, many adopted Bowden extruders, which required filament to feed through tightly fitting tubes to maintain pressure during retraction and extrusion. However, common PTFE tubes had a 3 mm inner diameter, making it difficult for true 3 mm filament to move smoothly—often causing jams.

This led to the adoption of a slightly smaller standard: 2.85 mm; as demand grew, manufacturers began producing filament in this new, more consistent format, helping to standardise 2.85 mm for many professional printers.

What are the Benefits of 2.85 mm Filament for 3D Printing?

Despite its niche use, 2.85 mm filament offers distinct advantages:

✅ Stiffer feedstock reduces buckling, especially with flexible materials like TPU/TPE.
✅ Over 2.5× the cross-sectional area of 1.75 mm filament, allowing higher volumetric output per spool turn.
✅ Less sensitive to diameter tolerance deviations, improving extrusion reliability.
✅ Ideal for XL spools and long print runs—particularly relevant to BigRep filament users

See Printing Atom’s article for a comprehensive overview of 1.75mm vs 2.85mm filament.

Why 3D Printing Shifted to 1.75 mm Diameter Filament

• Easier feeding with lighter hardware, requiring less extruder torque
• Greater extrusion precision—1.75 mm allows finer control and better retraction
• Wider filament availability and lower material cost due to market volume

As John Schneider (3D‑Fuel) remarked on a recent LinkedIn post about 2.85mm filament:
“We’ve discontinued 2.85 mm production… it was not a good use of resources to chase a shrinking market.”

Oliver Landau‑Williams observed:
“The kg per hr output of 2.85mm was its advantage over 1.75, but is slapped into oblivion by pellet systems. 1.75 is the ‘industry standard’ at this point…:

Nonetheless, a small but important base of users still rely on 2.85 mm for industrial workflows.

Who Still Uses 2.85 mm 3D Printing Filament in the UK?

UltiMaker 3D Printers

All S-series machines (including the Ultimaker S7) are designed for 2.85 mm filament, with optimised feed systems and print profiles. These printers are widely used across UK universities, labs, and design studios.

Filamentive is proud to be part of the UltiMaker Material Alliance, offering certified Cura profiles for PLA, PETG, CF‑PETG, and ASA.

BigRep & Large‑Format Printers

BigRep printers utilise 2.85 mm exclusively to support high-flow, large-scale prints. With XL spool sizes (up to 8.5 kg), our filament keeps industrial and large-format workflows running smoothly. Learn more about how Filamentive supports large-scale 3D printing with big filament spools.

Universities 3D Printing Makerspaces & Research Laboratories

With many UK institutions invested in fleets of Ultimaker printers, switching to a new filament diameter often requires hardware upgrades. Staying with 2.85 mm simplifies procurement and maximises existing equipment investment. Filamentive UK University customer, PrintCity – part of Manchester Metropolitan University – still operates Ultimaker 3D printers (as of August 2025).

Industrial Legacy 3D Printing Users

Users of LulzBot, BCN3D, and other professional machines continue to rely on 2.85 mm. As Daniel Barousse noted:
“2.85 mm filament has its place in industrial use cases—large format printing, prosthetics, drones, art pieces…”

Oliver Landau‑Williams added, “…the small fraction of users that are using 2.85mm are only using it because they have legacy machines and are maximizing that capex expense until the machine dies or the workflow changes.”

Filamentive offer 2.85 mm 3D Printer Filament in UK Stock

We support UK-based 2.85 mm users with the following 3D printing materials:

2.85mm
ASA Filament

• UV-resistant
• Ideal for outdoor 3D prints
• Available in 2.85 mm standard spools

Why Filamentive as your 2.85mm UK Filament Supplier?

• UK stock with next-day delivery
• Large filament spool-ready for industrial and BigRep workflows.
• Cura profiles validated through the UltiMaker Material Alliance.
• Strong sustainability credentials—recycled materials and free PLA waste recycling
• Trusted by UK universities, design studios, and industrial users

Although 1.75 mm filament is now standard for most hobbyist applications, 2.85 mm remains indispensable for large-format, industrial, educational, and professional users. Filamentive is committed to serving this niche with premium, sustainable 2.85 mm filament in UK stock, full material selection, and delivery reliability.

Explore our full range today, or email us at [email protected] to discuss your 2.85 mm filament requirements.