Extended material guidePA6 / Nylon 6

PA6 / Nylon 6 material guide

Polyamide 6 (Nylon 6)

PA6-family filaments can produce tough, wear-resistant functional parts, but moisture control is the first printing parameter. Dry the exact product according to its manufacturer, keep it dry while printing and separate unfilled nylon from abrasive PA6-CF or PA6-GF grades.

PA6 is a polyamide used when toughness, fatigue resistance, wear behaviour and low friction matter. Printed performance can change substantially as nylon absorbs moisture: conditioning may increase ductility while also changing dimensions and stiffness, so storage and service environment belong in the engineering decision.

Before you start: terms used in this guideOpen this short glossary if any technical term is new to you.

TDS — Technical Data Sheet

The manufacturer’s document for measured material properties and recommended processing conditions. Values apply to the named product and test method, not automatically to every material in the same family.

SDS — Safety Data Sheet

A document covering hazard classification, handling, storage and emergency information for the supplied product. It does not by itself measure every emission produced while the filament is heated and printed.

Glass-transition temperature (Tg)

The region where the amorphous part of a polymer changes from hard and glass-like to softer and more rubber-like. Tg is not the melting point and is not, by itself, a safe continuous-use temperature.

Heat deflection temperature (HDT)

The temperature at which a test specimen bends by a defined amount under a specified load. Always read the load and test method; HDT is not the same as melting temperature or a universal service limit.

Melting temperature

The temperature range where crystalline regions melt. A printed part can soften, creep or deform far below this value, so melting temperature must not be used as the part’s heat-resistance rating.

Hygroscopic

Able to absorb moisture from surrounding air. Wet filament can print poorly, and the finished part may also change dimensions or stiffness as it absorbs moisture.

Before you print

CN3D practical guidance

EnclosureRecommended for larger parts

DryingRequired

Build plateProduct-specific; check the exact filament guidance

Adhesive / release layerOften recommended; it can also protect the surface or act as a release layer

Nozzle temperatureStandard for unfilled nylon; hardened for CF/GF-filled grades

DifficultyAdvanced

Typical family starting range

CN3D practical guidance

Nozzle temperature250–290 °C

Build plate temperature30–110 °C

Print speedProduct-dependent

Part coolingProduct-dependent

Use this as a starting window, not as a universal profile. Check the spool, TDS or manufacturer profile for the exact product.

Common applications

Gears, bushings and sliding or wear-resistant components
Jigs, fixtures and impact-loaded functional parts
Clips, hinges and components that benefit from toughness
Parts exposed to oils or lubricants only after checking the exact grade, concentration and temperature

Limitations to plan around

Strong moisture absorption before, during and after printing
Warping and dimensional change, especially on large or highly constrained parts
Adhesion strategy varies significantly by formulation and build surface
Chemical resistance depends on substance, concentration, contact time, temperature, stress and the exact formulation

Manufacturer product example

Manufacturer data

Inslogic Nylon PA6/66

Inslogic Nylon PA6/66 TDS · 2025-01-20

The values below belong to the named formulation and must not be treated as universal values for the whole material family.

Recommended print settings

Nozzle temperature250–270 °C @ 50–100 mm/s; 270–280 °C @ 100–150 mm/s

Build plate temperature30–50 °C

Part cooling100%

Build plateTextured PEI

Adhesive / release layerRecommended for larger prints

EnclosureHeated chamber recommended for larger parts

Drying80 °C / 48 h · 110 °C / 3 h

Documented material properties

Documented material properties	Reported value	Method / condition
Density	1.08 g/cm³	ISO 1183
Glass-transition temperature (Tg)	65 °C	ISO 11357-3, 10 °C/min
Heat deflection temperature (HDT)	123 °C @ 0.45 MPa	ISO 75
Melting temperature	198 °C	ISO 11357-3, 10 °C/min
Moisture behaviour	Hygroscopic — keep dry before and during printing	TDS

Build plate and adhesion

CN3D

Follow the exact product rather than a generic nylon rule. The Inslogic PA6/66 example specifies textured PEI, glue for larger prints and a heated chamber for larger parts. Adhesive may provide adhesion, surface protection or controlled release; do not assume the same method for every PA6 blend.

Drying and storage

CN3D

Treat drying as a prerequisite. The Inslogic PA6/66 example specifies 80 °C for 48 hours or 110 °C for 3 hours and recommends keeping nylon dry during printing. Those conditions are unusually demanding: confirm the exact product, spool temperature rating and dryer capability, then print from a sealed dry path with desiccant and a hygrometer.

Calibration order

CN3D practical guidance

Dry first and keep the spool dry during every test. Then calibrate temperature for the selected speed band, maximum volumetric flow, flow rate, pressure advance, retraction and cooling. Recheck dimensions after the part equilibrates in its intended humidity.

Open the CN3D calibration workflow →

Practical troubleshooting

CN3D practical guidance

SymptomPopping, steam, foam or a rough surface

Likely causes

The filament absorbed moisture or the dry path is leaking humid air

What to change first

Stop tuning retraction; dry the product to its documented cycle and print from sealed dry storage

SymptomCorners lift or layers split

Likely causes

Moisture, unstable chamber temperature, plate mismatch or excessive cooling

What to change first

Verify dryness first, then stabilize the chamber and follow the product-specific plate guidance

SymptomDimensions change after printing

Likely causes

Moisture conditioning, shrinkage or internal stress

What to change first

Condition and measure the part in its intended service humidity before final tolerances are frozen

Printing environment and precautions

CN3D practical guidance

Printing precaution: Moderate

Moderate reflects the need for high processing temperatures, controlled handling and ventilation; it is not a medical verdict. Follow the product SDS, avoid overheating and ventilate the workspace. Filled grades add abrasion and fibre-containing dust considerations during cutting or sanding.

What it is and where it came from

CN3D

PA6, or Nylon 6, is a semicrystalline polyamide produced from caprolactam. PA6/66 copolymers and reinforced grades are distinct formulations, not synonyms for one universal nylon. Their melting behaviour, moisture uptake, stiffness and print settings must remain attached to the named product.

Official slicer profiles

Manufacturer profile

A manufacturer profile must match the exact nylon grade. Do not transfer a PA6-CF profile to unfilled PA6/66: reinforcement changes flow, abrasion, temperature and cooling behaviour. Keep the printer profile and machine limits, import only compatible filament settings, then calibrate.

Official profile libraryPolymaker PA preset libraryPolymaker · PA productsOpen official resource ↗

Official manufacturer resources

Manufacturer data

These documents and profiles open on the manufacturer’s infrastructure. CN3D does not rehost or claim ownership of them.

Technical data sheetInslogic Nylon PA6/66 TDSInslogic · Nylon PA6/66Open official resource ↗Safety data sheetInslogic Nylon PA6/66 SDSInslogic · Nylon PA6/66Open official resource ↗Manufacturer product pageInslogic Nylon PA6/66 product pageInslogic · Nylon PA6/66Open official resource ↗Official guidePrusa polyamide material guidePrusa Research · Polyamide familyOpen official resource ↗Official guidePolymaker CoPA product guidancePolymaker · PolyMide CoPAOpen official resource ↗

Useful equipment

CN3D practical guidance

For PA6, a real dryer, sealed dry storage, desiccant and a hygrometer solve a documented technical problem. Print directly from the dry system when possible. Use a standard nozzle for unfilled PA6 and a hardened wear-resistant nozzle for carbon- or glass-fibre-filled grades.

Dry storage / hygrometerInslogic FilaDC i10 drying cabinet20% off · code CN3DSave 20% with code CN3D. Enter CN3D at checkout.Filament dryerPolymaker PolyDryerManufacturer link · not currently an affiliate link Dry storage / hygrometerPolymaker PolyBox with hygrometerManufacturer link · not currently an affiliate link

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