How to 3D Print Nylon — Settings, Drying & Tips for Success

Nylon is one of the strongest, most versatile 3D printing materials available. It offers exceptional impact resistance, flexibility, wear resistance, and chemical stability. Gears, hinges, snap-fits, brackets, and load-bearing parts that would shatter in PLA or crack in PETG thrive in nylon.

But nylon is also one of the most demanding filaments to print. It absorbs moisture like a sponge, warps aggressively, requires high temperatures, and bonds poorly to most bed surfaces. Many makers try nylon once, get a warped mess, and give up.

This guide covers everything you need to succeed: exact print settings, mandatory drying protocols, enclosure requirements, bed adhesion solutions, and per-printer tuning tips. Follow these steps and nylon becomes reliable.

Why Print Nylon?

Before wrestling with the printing challenges, understand what makes nylon worth the effort:

• Impact resistance: Nylon absorbs impact energy instead of shattering. Parts survive drops, impacts, and repeated stress.
• Flexibility with strength: Nylon bends without breaking. Snap-fits, living hinges, and flexible connectors work beautifully.
• Wear resistance: Gears, bushings, and sliding surfaces printed in nylon outlast PLA and PETG by orders of magnitude.
• Chemical resistance: Nylon resists oils, greases, and many solvents — ideal for automotive and industrial applications.
• Temperature resistance: Most nylon variants handle 80-120°C continuous use.

If your part needs to be tough, flexible, and durable in demanding conditions, nylon is the right material.

Types of Nylon Filament

Nylon 6 and Nylon 66

The original industrial nylons. Extremely strong and heat-resistant but very difficult to print — aggressive warping, high moisture absorption, and temperatures exceeding 260°C. Not recommended for beginners.

Nylon 12 (PA12)

The most common 3D printing nylon. Easier to print than Nylon 6/66 with lower moisture sensitivity and less warping. Still requires drying and an enclosure. Good balance of strength, flexibility, and printability.

Nylon 6/66 + Carbon Fiber (PA-CF)

Nylon reinforced with chopped carbon fibers. Extremely stiff, strong, and dimensionally stable. The carbon fiber reduces warping and shrinkage compared to pure nylon. Requires a hardened steel nozzle (carbon fiber is abrasive). Popular brands include Bambu Lab PA6-CF and Polymaker PolyMide PA6-CF.

Nylon + Glass Fiber (PA-GF)

Similar benefits to carbon fiber variants — improved stiffness and reduced warping. Slightly less stiff than carbon fiber but more impact-resistant. Also requires a hardened steel nozzle.

The #1 Rule: Dry Your Nylon

This is not optional. It is not "nice to have." If you skip drying, your prints will fail.

As documented by MatterHackers' nylon guide, nylon absorbs moisture from the air faster and more aggressively than any other common filament. Nylon can absorb more than 10% of its weight in water within 24 hours of open-air exposure.

What Happens When Nylon Is Wet

When wet nylon hits the hot nozzle, the moisture turns to steam, creating:

• Bubbles and popping — you can hear the moisture crackling in the nozzle
• Rough, textured surface — steam bursting through the extrusion creates pockmarks
• Poor layer adhesion — steam disrupts the bond between layers, dramatically weakening the part
• Stringing and oozing — steam pushes molten material out unpredictably
• Dimensional inaccuracy — the extruded line width becomes inconsistent

Drying Protocols

According to Sovol's filament drying guide, nylon should be dried at the highest temperature of any common filament:

| Method | Temperature | Time | Notes | |---|---|---|---| | Filament dryer (SUNLU S2, eSUN eBox) | 70-80°C | 8-12 hours | Most convenient, can print directly from dryer | | Food dehydrator | 70°C (max) | 12-24 hours | Budget option, may not reach ideal temperature | | Oven | 80°C | 6-8 hours | Risky — ovens fluctuate and can melt spools | | Dedicated dryer (PrintDry Pro) | 75°C | 8-12 hours | Designed for filament, consistent results |

Best practice: Dry for a minimum of 8 hours before first use. If the filament has been exposed to air for more than a few hours, dry it again. For the most consistent results, print directly from the dryer — keep the spool in the dryer while it feeds into the printer. As recommended in QIDI's nylon printing guide, this ensures the filament stays dry throughout the entire print.

Long-Term Storage

• Store in vacuum-sealed bags with silica gel desiccant packs
• Use a filament dry box with hygrometer — aim for below 15% relative humidity
• Never leave nylon on the spool holder in open air for more than the print duration
• Replace desiccant packs monthly or when the indicator beads change color

Print Settings

Universal Nylon Settings

Nozzle Temperature: 250-260°C (PA12), 270-290°C (PA6-CF)
Bed Temperature: 80-100°C
Print Speed: 40-60 mm/s
Retraction Distance: 1-3 mm (direct drive) / 3-5 mm (Bowden)
Retraction Speed: 25-35 mm/s
Cooling Fan: 0-30% (minimal cooling)
Infill: 30-50% for functional parts
Layer Height: 0.2mm (0.15mm for precision)
First Layer Speed: 20-30 mm/s
Enclosure: Required (50-60°C chamber preferred)
Nozzle Type: Hardened steel (mandatory for CF/GF variants)

Printer-Specific Settings

Bambu Lab X1C / P1S (PA12)

Nozzle Temperature: 260°C
Bed Temperature: 85°C (textured PEI)
Print Speed: 60 mm/s (X1C handles faster)
Chamber Temperature: Use enclosure, preheat 10 min
Cooling Fan: 20%
Nozzle: Hardened steel (included on X1C)

Bambu Lab X1C (PA6-CF)

Nozzle Temperature: 280°C
Bed Temperature: 100°C
Print Speed: 50 mm/s
Chamber Temperature: Preheat enclosure 15 min
Cooling Fan: 0-10%
Nozzle: Hardened steel (included)

Creality Ender-3 S1 / V3 (PA12 only)

Nozzle Temperature: 250°C
Bed Temperature: 80°C
Print Speed: 40 mm/s
Cooling Fan: 0%
Nozzle: Upgrade to hardened steel ($8-15)
Note: Add enclosure (DIY or commercial)

Prusa MK4 / MK3S+ (PA12)

Nozzle Temperature: 255°C
Bed Temperature: 85°C (smooth PEI)
Print Speed: 45 mm/s
Cooling Fan: 15%
Nozzle: Upgrade to hardened steel
Note: Enclosure recommended (Prusa enclosure or DIY)

As referenced in Prusa's polyamide knowledge base, proper temperature calibration is essential for each nylon variant.

Bed Adhesion: The Warping Problem

Nylon's biggest printing challenge is warping. It shrinks significantly as it cools, pulling corners up from the bed and distorting the part. Standard adhesion methods (PEI sheet alone, hairspray, blue tape) are often insufficient.

Solutions That Work

Garolite (G10/FR4) build plate — Best solution Garolite is a fiberglass-reinforced laminate that nylon bonds to exceptionally well at temperature and releases cleanly when cool. Many makers consider this the definitive solution for nylon bed adhesion. Garolite sheets cost $15-$30 and can be cut to fit your printer's bed.

PVA glue stick on PEI Standard Elmer's purple glue stick applied to a PEI build plate provides good adhesion for PA12 nylon. Apply a thin, even layer before each print. The glue acts as both an adhesive and a release agent.

Magigoo PA A specialty adhesive designed specifically for nylon. Apply to any build surface, print, and the part releases when the bed cools. More expensive than glue stick ($15-$20 per bottle) but more reliable.

Brim and raft Always use at least a 10mm brim with nylon. For parts with sharp corners or long flat edges, increase to 15-20mm or use a full raft. The extra adhesion surface resists the warping forces during cooling.

Enclosure Requirements

An enclosure is not optional for nylon. It serves two purposes:

1. Maintains ambient temperature around the print, reducing the temperature differential between newly deposited layers and cooled layers. This directly reduces warping.
2. Blocks drafts that cause uneven cooling and layer delamination.

Enclosure Options

• Built-in enclosure: Bambu Lab X1C and P1S have factory enclosures. The X1C's enclosure is more robust with better sealing.
• Prusa Enclosure: A flat-pack acrylic enclosure for Prusa MK4/MK3S+.
• DIY LACK enclosure: The classic two-IKEA-LACK-table enclosure with acrylic panels. Costs about $30-$50 in materials.
• Commercial enclosures: Creality, SUNLU, and others sell universal printer enclosures ($50-$100).

Aim for a chamber temperature of 45-60°C. Higher is better for nylon. The Bambu Lab X1C with doors and top closed reaches approximately 50-55°C during long prints.

Troubleshooting Common Nylon Issues

Warping

• Increase bed temperature by 5°C
• Add more brim (15-20mm)
• Ensure enclosure is sealed (cover ventilation holes during print)
• Reduce print speed for first 5 layers
• Use a garolite build plate

Stringing

• Ensure filament is completely dry (this is the #1 cause)
• Increase retraction distance by 0.5mm
• Reduce nozzle temperature by 5°C
• Enable z-hop (0.2-0.4mm)
• Increase travel speed

Poor Layer Adhesion

• Almost always caused by moisture — dry the filament
• Increase nozzle temperature by 5-10°C
• Reduce cooling fan to 0-10%
• Slow print speed to 30-40 mm/s

First Layer Not Sticking

• Switch to garolite or use Magigoo PA
• Increase first layer flow to 105-110%
• Slow first layer to 15-20 mm/s
• Increase bed temperature to 90-100°C
• Apply fresh glue stick for every print

Bubbling and Popping

• The filament is wet. Dry it. There is no other fix.
• Dry for at least 8 hours at 70-80°C
• Print directly from the dryer

Nylon vs Other Materials

When should you choose nylon over PETG or ABS?

Choose nylon when you need:

• Snap-fits and living hinges (nylon excels at repeated flexing)
• Wear surfaces (gears, bushings, slides)
• Maximum impact resistance (nylon bends, PLA/PETG/ABS snap)
• Chemical resistance for automotive or industrial use
• Parts that experience vibration

PETG is sufficient when:

• You need moderate heat resistance without the printing difficulty
• Parts are functional but not subject to repeated flexing or impact
• You do not have an enclosure

ABS is better when:

• You need vapor smoothing for a glossy surface
• Parts need high temperature resistance (100°C+) without carbon fiber
• You are already set up for ABS (enclosure, ventilation)

Finding Nylon-Ready Models

Many functional models on 3DSearch are designed for strong materials like nylon. Search for gears, hinges, brackets, and mechanical parts. The AI settings feature on 3DSearch can suggest optimized settings for nylon printing based on your specific printer model.

Final Thoughts

Nylon is not a material you pick up casually. It demands preparation: filament must be dry, the enclosure must be sealed, and settings must be dialed in. But once you get it right, nylon produces parts that no other FDM material can match for toughness, flexibility, and durability.

Start with PA12 nylon — it is the most forgiving variant. Dry it thoroughly, use a garolite bed or glue stick, print slowly in a sealed enclosure, and you will produce parts that genuinely rival injection-molded nylon. Once comfortable, move to PA-CF for even greater performance.