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Formlabs Nylon 12 White Powder – 10 kg

Formlabs Nylon 12 White Powder – 10 kg
Formlabs Nylon 12 White Powder – 10 kg
Formlabs Nylon 12 White Powder – 10 kg
Formlabs Nylon 12 White Powder – 10 kg

Formlabs Nylon 12 White Powder is a selective laser sintering (SLS) powder engineered for the Fuse 1+ 30W printer, delivering crisp white parts with 47 MPa tensile strength, ISO 10993-evaluated biocompatibility, and the ability to accept custom dyes — making it equally suited for functional prototypes, branded consumer parts, and medical-grade applications.

Property Value
Ultimate Tensile Strength 47 MPa
Tensile Modulus 1950 MPa
Heat Deflection Temp. @ 1.8 MPa 87 °C
Biocompatibility ISO 10993-1:2018 evaluated
Functional parts printed with Formlabs Nylon 12 White Powder on the Fuse 1+ 30W

White SLS Parts Without Compromise

Standard SLS materials produce grey or off-white surfaces. Nylon 12 White Powder breaks that pattern. Titanium dioxide pigmentation delivers a clean, consistent white finish that rivals the appearance of Multi Jet Fusion (MJF) output — with the open-platform advantages of SLS processing. The coarser surface texture is forgiving: minor scratches and handling marks are far less visible than on polished surfaces, preserving a professional look across the full product lifecycle.

Because the base colour is neutral white, parts accept reactive dyes in virtually any hue. One batch of powder, unlimited colour options — a decisive advantage for branding teams and packaging designers who need consistent Pantone matching without committing to separate tooling.

Comparison of MJF and SLS white parts produced with Formlabs Nylon 12 White Powder

Biocompatibility for Medical and Safety Applications

White is the clinical default. Nylon 12 White Powder has been evaluated under ISO 10993-1:2018 at NAMSA World Headquarters (OH, USA) and cleared all tested categories:

  • No systemic toxicity (ISO 10993-11:2017)
  • Not cytotoxic (ISO 10993-5:2009)
  • Not an irritant (ISO 10993-23:2021)
  • Not a sensitizer (ISO 10993-10:2021)
  • Nonpyrogenic (ISO 10993-11:2017)

This makes the material directly applicable to surgical guides, medical models, orthotic components, and skin-contact consumer products — without requiring secondary certification testing for these risk categories.

Mechanical Performance Compared to Standard Nylon 12

The white formulation trades a degree of impact resistance for increased stiffness. Tensile modulus rises to 1950 MPa versus 1850 MPa for standard Nylon 12, while elongation at break in the X/Y plane drops slightly from 11 % to 8 %. For structural housings, fixtures, and jigs subjected to static loads, that stiffer profile is an advantage. Impact-critical designs should be validated against the full property dataset.

Expert Verdict: Nylon 12 White Powder occupies a precise niche: where appearance parity with injection moulding or MJF matters, where a neutral dyeable base is commercially necessary, or where ISO 10993 biocompatibility opens regulated market doors. The mandatory bed temperature tuning workflow adds a one-time setup overhead, but the payoff — consistent white across multiple builds — is substantial. For teams already running a Fuse 1+ 30W, this material unlocks white-label production and medical applications without any hardware investment.

Printing Requirements and Best Practices

Nylon 12 White Powder demands a bed temperature tuned Fuse 1+ 30W printer. Variable bed temperatures are the primary cause of surface defects with this material; running the tuning diagnostic print through PreForm before the first build is mandatory, not optional. Each printer unit requires its own calibration — even two identical machines in the same room may need different offset values.

A nitrogen atmosphere (inert atmospheric control) is strongly recommended. Parts printed in ambient air may yellow progressively as powder ages, and the yellowing is often uneven as parts cool. If the end goal is dyeing, yellowing before colouring is less critical, and raising the refresh rate to 50 % when printing in air helps slow discolouration.

Model geometries that benefit from powder aging before first print with Nylon 12 White

Parts with uniform cross-sections along the Z-axis may print with surface defects when using fresh powder. Aging the powder once before the first build creates sufficient recycled content to resolve this. The aging procedure only needs to be performed once.

Additional orientation and spacing guidelines for optimal surface quality:

  • Centre parts in the build chamber, keeping them away from walls — especially the back wall
  • Orient large flat surfaces perpendicular to the print plane
  • Avoid facing flat faces towards the front of the build chamber
  • Maintain at least 3 mm spacing between parts for easiest depowdering
  • Slightly curved surfaces along the Z-axis will show layer lines — account for this in design

Post-Processing and Material Handling

Nylon 12 White Powder is stickier than standard Nylon 12. Parts require brush-assisted cleaning to separate from the powder cake; the Fuse Sift sensors may read false errors due to powder coverage, though sifting continues normally. Use a dedicated depowdering station and media blaster — cross-contamination from other powder types causes visible discolouration that cannot be removed.

Powder buildup on the recoater requiring cleaning between Nylon 12 White print jobs

Between prints, clean the top of the print enclosure, both powder troughs, and the recoater. Accumulated semi-sintered powder dragged into the build chamber during subsequent prints is the leading cause of batch failures with this material.

Vacuuming the left powder trough of the Fuse 1+ 30W between Nylon 12 White print runs

The refresh rate for Nylon 12 White is 30 % to maximise efficiency and print reliability. Using a dedicated build chamber for this material is highly recommended; if switching from a lower-temperature material such as Polypropylene, replace the print bed assembly to prevent stuck-bed failures.

Top area of the Fuse 1+ 30W build chamber requiring vacuuming between Nylon 12 White prints
Tech Tip: When switching to Nylon 12 White from any previously loaded material, dedicate a separate build chamber and Fuse Sift to avoid cross-contamination. Even trace amounts of grey Nylon 12 visible in the depowdering station will produce a dirty appearance on white parts. A one-time investment in a dedicated sifting unit eliminates the most common quality complaint with this powder entirely.

Technical Specifications of the Formlabs Nylon 12 White Powder

Mechanical Properties

Property Metric Imperial Test Method
Ultimate Tensile Strength 47 MPa 6900 psi ASTM D638-14 Type 1
Tensile Modulus 1950 MPa 285 ksi ASTM D638-14 Type 1
Elongation at Break (X/Y) 8 % 8 % ASTM D638-14 Type 1
Elongation at Break (Z) 6 % 6 % ASTM D638-14 Type 1
Flexural Strength 56 MPa 8100 psi ASTM D790-17
Flexural Modulus 1500 MPa 217 ksi ASTM D790-17
Notched Izod Impact Strength 28 J/m 0.5 ft-lb/in ASTM D256-10

Thermal Properties

Property Metric Imperial Test Method
Heat Deflection Temperature @ 1.8 MPa 87 °C 189 °F ASTM D648-16
Heat Deflection Temperature @ 0.45 MPa 177 °C 350 °F ASTM D648-16
Vicat Softening Temperature 177 °C 350 °F ASTM D1525

Other Properties

Property Value Test Method
Water Absorption (printed part) 1.40 % ASTM D570
Flammability Rating UL 94 HB (3.00 mm) UL 94 Section 7
Powder Refresh Rate 30 % Formlabs specification
Net Weight 10 kg
Product Code FLP12W01
Compatible Printer Formlabs Fuse 1+ 30W
Recommended Atmosphere Nitrogen (inert) Formlabs specification

Biocompatibility (ISO 10993-1:2018)

ISO Standard Test Category Result
ISO 10993-11:2017 (Systemic Toxicity) No systemic toxicity Pass
ISO 10993-5:2009 (Cytotoxicity) Not cytotoxic Pass
ISO 10993-23:2021 (Irritation) Not an irritant Pass
ISO 10993-10:2021 (Sensitization) Not a sensitizer Pass
ISO 10993-11:2017 (Pyrogenicity) Nonpyrogenic Pass

What's in the Box

  • Formlabs Nylon 12 White Powder – 10 kg cartridge (product code FLP12W01)

How to Prepare and Print with Nylon 12 White Powder on the Fuse 1+ 30W

Follow these steps to complete the mandatory first-use setup and achieve consistent white SLS parts from the first build.

Step 1 – Confirm Printer Compatibility

Verify that your printer is a Fuse 1+ 30W. Consult the Formlabs compatibility table in "Choosing the right powder" to confirm the unit is cleared for Nylon 12 White. Using this powder on an incompatible printer may cause equipment damage.

Step 2 – Run Bed Temperature Tuning

Download the bed temperature tuning diagnostic print from Formlabs support and upload it via PreForm to the printer. This calibration eliminates surface defects caused by variable printer temperatures. Each individual printer requires its own tuning run — even identical units in the same room may need different offset values.

Step 3 – Age the Powder (If Required)

Parts with uniform cross-sections along the Z-axis may fail with fresh powder. If your design falls into this category, age the powder once after bed tuning, following Formlabs' aging procedure. This creates sufficient recycled powder for the first production print.

Step 4 – Configure Atmosphere and Open PreForm

Enable inert atmospheric control (nitrogen) for the most consistent white colour and mechanical properties across multiple builds. Open the model in PreForm, orient parts towards the centre of the build chamber with at least 3 mm spacing, and send the job to the printer.

Step 5 – Extract and Clean Parts

Use a brush to assist part separation from the powder cake — Nylon 12 White is stickier than standard Nylon 12. Blast in a dedicated media blaster to avoid cross-contamination. Do not over-blast, as this can create dull patches on the white surface.

Step 6 – Clean the Printer Between Builds

Vacuum the top of the print enclosure, both powder troughs, and the recoater assembly between every print. Use a compliant static-dissipative vacuum. Move the flipper motors via the Maintenance → Motor Moves menu on the touchscreen to dislodge trapped powder from trough corners before vacuuming.


Which printer is Nylon 12 White Powder designed for?

Formlabs Nylon 12 White Powder (FLP12W01) is specifically developed for the Fuse 1+ 30W printer with bed temperature tuning enabled. It is not rated for other Fuse generation printers without first confirming compatibility via the Formlabs powder compatibility table.

Why is bed temperature tuning mandatory for Nylon 12 White?

Nylon 12 White is more sensitive to printer temperature variation than standard Nylon 12. Without tuning, variable bed temperatures cause surface defects and inconsistent whiteness across the build volume. The tuning diagnostic corrects for unit-specific thermal offsets, and must be run separately on each printer even if the machines are the same model.

Can Nylon 12 White Powder be printed in ambient air instead of nitrogen?

Yes, but parts may yellow progressively and unevenly as the powder ages. Increasing the refresh rate to 50 % when printing in air slows discolouration. If the final parts will be dyed, yellowing before colouring is less problematic. For applications requiring consistently white surfaces — especially medical or branded parts — nitrogen atmosphere is strongly recommended.

Is Nylon 12 White Powder biocompatible?

Samples have been evaluated under ISO 10993-1:2018 and passed testing for systemic toxicity, cytotoxicity, irritation, sensitization, and pyrogenicity. It is the manufacturer's responsibility to validate printed parts for specific intended uses, taking into account part geometry, design, and manufacturing practices.

Can Nylon 12 White parts be dyed after printing?

Yes. The neutral white base accepts reactive dyes across a wide colour range, making this powder ideal for branded prototypes and colour-matched end-use parts. Formlabs publishes a dedicated whitepaper on dyeing SLS parts for guidance on dye selection and process control.

Why does Nylon 12 White require a dedicated depowdering station?

Nylon 12 White is highly sensitive to cross-contamination from other powder types. Even trace amounts of grey or coloured powder mixed in during depowdering or blasting will produce a visibly dirty appearance on finished white parts. A dedicated Fuse Sift and media blaster eliminates this risk entirely.



Why Choose EXPERT3D?

EXPERT3D has been serving the professional 3D technology sector since 2012, offering hands-on expertise in SLS, FDM, and resin printing systems. Our team provides pre-sale material consultancy, application matching, and post-sale technical support to ensure your Nylon 12 White production workflow runs from first calibration to finished part. Buy with confidence — genuine Formlabs consumables, expert guidance, and full after-sales support included.


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