Best Nylon Filament for 3D Printing: No-Enclosure PA6/66 Settings, Strength & Drying Guide (2026)

What Is Nylon Filament?

Nylon filament, also called polyamide or PA filament, is a thermoplastic FDM material known for strength, toughness, flexibility, wear resistance, chemical resistance, and low friction. It is used widely in engineering because it can survive applications where ordinary PLA is too brittle, PETG is not wear-resistant enough, and ABS or ASA may not provide the same flexibility or abrasion resistance.

In 3D printing, nylon is especially attractive because a single printed part can be strong in thick sections, slightly flexible in thin sections, and durable under repeated handling. This makes it a practical material for moving parts, clips, drone components, small gears, shop tools, brackets, fixtures, product prototypes, and low-volume end-use parts. External material guides from Prusa and UltiMaker describe nylon as a material with excellent mechanical resistance, abrasion resistance, low friction, and strong functional-part potential, while also noting that moisture and warping must be managed carefully.^{1 2}

Why Traditional Nylon Is Hard to Print

Nylon has an excellent performance profile, but many users avoid it because traditional nylon can be unforgiving. The three problems that create most failed nylon prints are moisture absorption, thermal shrinkage, and insufficient first-layer control. If the filament is wet, the print may pop, bubble, string, foam, or lose strength. If the part cools unevenly, the corners may lift from the build plate. If the print environment is too cold or the fan is too high, the part may crack, warp, or separate between layers.

This is why many older nylon guides recommend an enclosed printer, a specialized build surface, and a careful drying workflow. Those recommendations are still useful, especially for difficult geometries and large parts, but they also create a barrier for many desktop users. A school with open-frame printers, a Bambu Lab A1 owner, a Prusa user, or a Creality user may want nylon strength without having to buy an enclosed industrial machine first.

Standard Nylon vs. QTS EZ Nylon

The reason QTS EZ Nylon is important for the U.S. market is simple: it keeps the engineering advantages of PA 6/66 while making the print workflow easier. QTS EZ Nylon is a PA 6/66 Copolyamide filament engineered with nucleating technology to reduce crystallization shrinkage. The result is an ultra-low 0.6–0.8% shrinkage rate, which helps reduce warping and makes nylon printing more practical on open machines.

Instead of forcing every user into an enclosed chamber, QTS EZ Nylon gives makers and professionals a more accessible path to nylon performance. An enclosure can still be helpful for very large parts, drafts, or demanding geometry, but it is not mandatory for many practical prints when the filament is dry, the bed is prepared correctly, and cooling is kept low.

Best QTS EZ Nylon Print Settings

The following profile is a practical starting point for QTS EZ Nylon on mainstream FDM printers. Always adjust based on your printer model, nozzle size, build plate, part geometry, room temperature, and desired strength. For large functional parts, prioritize layer bonding, bed adhesion, and low cooling over cosmetic speed.

Printer Compatibility: Bambu Lab, Prusa, Creality, and More

QTS EZ Nylon is designed for broad FDM/FFF compatibility, including popular desktop printers from Bambu Lab, Prusa, Creality, and similar platforms. The most important hardware requirement is a hotend that can reliably reach the required nozzle temperature. MatterHackers notes that nylon printing generally requires a hotend capable of at least 250°C, which is why users should confirm that their printer’s hotend and firmware profile are suitable before starting.³

For Bambu Lab users, QTS USA recommends using an external filament feeder rather than the Bambu Lab AMS. Nylon has a smooth surface that can create feeding instability inside automatic material systems. Feeding directly from an external spool holder or, ideally, a heated filament dryer gives the printer a more stable path and keeps the material dry during long prints.

How to Dry Nylon Filament Correctly

Drying is not optional with nylon. It is part of the material workflow. Nylon absorbs moisture quickly from air, and that moisture can turn into steam inside the hotend. The result may be popping sounds, rough surfaces, stringing, foamy extrusion, weak layers, and inconsistent dimensions. BCN3D explains that moisture can reduce the final strength and surface finish of PA parts, while MatterHackers emphasizes that wet nylon can create air bubbles and poor layer adhesion.^{3 4}

For QTS EZ Nylon, dry the spool at 65–75°C for at least 12 hours. For best results, print directly from a heated filament dryer. If that is not possible, dry the spool immediately before printing and store it in an airtight bag or container with fresh desiccant. For long functional prints, dry-box printing is strongly recommended because nylon can reabsorb moisture during the job.

Best Applications for Nylon Filament

Nylon is not the cheapest or easiest material, so it should be used where its engineering value matters. If the part only needs to be decorative, high-speed PLA may be more efficient. If the part needs outdoor UV resistance, ASA+ may be the better first choice. If the part needs strong wear resistance, repeated flex, impact tolerance, and chemical resistance, nylon becomes one of the most compelling FDM materials.

Drone Frames and RC Parts

Drone frames, RC parts, and robotics components need a combination of impact resistance, vibration tolerance, and lower brittleness. QTS EZ Nylon is a strong match for these parts because it can absorb stress better than brittle materials and offers 65 MPa tensile strength with 100–120% elongation at break.

Industrial Gears and Wear Parts

Nylon’s low friction and wear-resistant behavior make it attractive for gears, bushings, guides, sliding parts, and small mechanical components. While printed gears still need proper design, lubrication, and load testing, nylon is often a better candidate than PLA for parts that experience repeated movement.

Living Hinges, Clips, and Snap-Fit Parts

Thin nylon sections can flex repeatedly without snapping as easily as more brittle materials. This makes QTS EZ Nylon useful for living hinges, compliant mechanisms, snap-fit connectors, enclosures with flexible tabs, and prototypes that must simulate injection-molded nylon behavior.

Functional Prototypes and End-Use Fixtures

Product designers and engineering teams often need prototypes that behave more like final-use plastic parts. QTS EZ Nylon gives teams a practical way to test fit, impact behavior, flex, assembly, and handling before committing to tooling or injection molding.

Material Selection: When Should You Choose Nylon?

The best material is always application-specific. Nylon is not a replacement for every filament, but it fills an important gap between easy printing and real functional performance. Use this comparison to decide when QTS EZ Nylon belongs in your material workflow.

Troubleshooting QTS EZ Nylon Prints

Most nylon failures come from a small number of causes. If a print fails, do not change every setting at once. Diagnose the symptom, adjust one variable, and run a smaller calibration print before restarting a large functional part.

Why Buy QTS EZ Nylon from QTS USA?

QTS USA brings Taiwan-engineered 3D printing materials to North American makers, engineers, educators, and businesses. QTS has more than 30 years of chemical industry background and more than 15 years of 3D printing material experience. For engineering filaments such as QTS EZ Nylon, that manufacturing background matters because consistency is what turns a high-performance material into a reliable daily production material.

Every spool of QTS EZ Nylon is designed around stable batch quality, broad printer compatibility, and practical technical support. The material is made in Taiwan, stocked for U.S. buyers, and positioned for users who want stronger functional parts without turning nylon printing into a frustrating trial-and-error project.