The eSUN ePA Nylon Transparent 1.75mm 1kg 3D Printer Filament is an industrial-grade engineering thermoplastic designed for high-strength, wear-resistant functional parts and mechanical prototyping on desktop FDM 3D printers. Formulated from premium Polyamide (Nylon 6/66 copolymer), this filament delivers exceptional impact toughness, high tensile elongation, outstanding chemical and abrasion resistance, and a natural semi-translucent finish suitable for durable, heavy-duty applications.

Specification

• Brand / Manufacturer: eSUN
• Product Name: ePA Nylon Natural / Transparent Filament
• Color Profile: Natural Semi-Translucent / Clear (Transparent Nylon)
• Filament Diameter: 1.75mm (Dimensional accuracy within ±0.03mm)
• Net Weight: 1.0 kg (2.2 lbs) spool
• Base Polymer Matrix: Unfilled Polyamide (PA / Nylon 6/66 copolymer)
• Recommended Extruder / Nozzle Temperature: 230°C to 260°C
• Recommended Heated Bed Temperature: 80°C to 100°C
• Recommended Chamber Temperature: Enclosed printing recommended (40°C to 60°C)
• Printing Speed Range: 30mm/s to 60mm/s
• Cooling Fan Speed: 0% to 10% (Fan OFF strongly recommended for optimal layer adhesion)
• Heat Deflection Temperature (HDT): Approx. 85°C to 90°C (at 0.45 MPa)
• Tensile Strength: Approx. 50 - 65 MPa
• Elongation at Break: Approx. 120% - 180% (High elasticity and shock resistance)
• Impact Strength (Izod): Approx. 10 - 15 kJ/m²
• Spool Material: High-Temperature Resistant Spool (Oven / Dryer Bake-Safe)

Features

• Extreme Toughness and High Elongation: Features unmatched impact absorption and tensile ductility (over 120% elongation at break), allowing printed parts to bend, flex, and absorb heavy mechanical shock without cracking or shattering.
• High Wear and Abrasion Resistance: Inherently low coefficient of friction provides natural self-lubricating properties, making it ideal for rotating gears, sliding bushings, and continuous-contact mechanisms.
• Superior Chemical and Solvent Resistance: Highly resistant to industrial hydrocarbons, oils, greases, fuels, and standard workshop cleaning solvents.
• Natural Semi-Translucent Appearance: Extrudes with an attractive milky, semi-clear finish that allows for optical inspection of internal infill patterns, fluid flow, or backlit mechanical assemblies.
• Exceptional Interlayer Bonding: When printed at proper extrusion temperatures in an enclosed chamber, neat nylon provides near-isotropic layer bonding strength for solid, watertight structural components.

Common Applications

• Gears, Pulleys & Sliding Bushings: Fabricating smooth, low-friction kinematic components that require wear resistance, self-lubrication, and quiet mechanical operation.
• Snap-Fit Joints & Living Hinges: Printing high-fatigue clips, cable guides, flexure hinges, and latch mechanisms that undergo continuous cyclical bending.
• Heavy-Duty Functional Enclosures & Tooling: Producing tough industrial brackets, impact-resistant protective covers, robotic grippers, and fluid reservoir tanks.

Professional Installation and Maintenance Tips

• Bake and Dry Thoroughly Before Printing: Nylon is extremely hygroscopic and absorbs moisture directly from room air within hours. Always bake the filament spool in a filament dryer or oven at 70°C to 80°C for 8 to 12 hours before printing, and ideally feed directly from an active dry box.
• Use Garolite (FR4) or Specialized Nylon Adhesives: Pure nylon does not adhere well to standard PEI or bare glass. Use a Garolite/FR4 build surface or apply a dedicated nylon bed adhesive (such as Magigoo PA or PVA glue-stick layer) on a bed heated to 85°C - 95°C to prevent warping.
• Print in an Enclosed Environment: Neat nylon shrinks significantly upon cooling. Printing inside an enclosed chamber with the part cooling fan turned completely OFF prevents thermal delamination, corner lifting, and internal stress cracking.
• Use Standard Brass or Hardened Nozzles: Unlike carbon-fiber-filled nylon, unreinforced ePA is non-abrasive and can be printed safely using standard brass nozzles (0.4mm or 0.6mm) without accelerated wear.