3D Printing Filament Guide

The most popular 3D printing filament worldwide. PLA is derived from renewable resources like corn starch, prints easily with minimal warping, and is available in hundreds of colors. It is the default choice for beginners, rapid prototyping, and decorative prints.

An upgraded PLA with significantly better impact resistance and slightly higher heat tolerance. PLA+ prints just as easily as standard PLA but produces parts that are less brittle and more durable for functional use.

A PLA variant with special additives that produce a glossy, metallic sheen straight off the print bed. Silk PLA trades some detail sharpness for a stunning surface finish that looks like polished metal or satin fabric. It is ideal for display pieces, gifts, and decorative objects where visual impact matters more than mechanical strength.

A PLA blend formulated with mineral or polymer additives that eliminate glossy reflections and hide layer lines. Matte PLA produces prints with a soft, velvety surface that looks professional without any post-processing. It is the go-to choice when you want prints that photograph well and feel premium to the touch.

A specially formulated PLA engineered for extreme print speeds of 150-300+ mm/s without sacrificing layer adhesion. High-speed PLA uses modified polymer chains that maintain a low, stable melt viscosity at high flow rates. It is designed for modern high-speed printers like the Bambu Lab and Creality K-series that can mechanically handle rapid movements.

PLA filament manufactured from post-industrial or post-consumer recycled PLA waste, offering the same printability as virgin PLA with a significantly lower carbon footprint. Recycled PLA typically has minor color variations between batches and a slightly more matte finish than standard PLA, which many users consider an aesthetic bonus.

The most versatile all-around filament for functional parts. PETG combines PLA-like ease of printing with significantly better impact resistance, chemical resistance, and heat tolerance. It bends before it breaks, making it ideal for parts under stress.

Recycled PETG is made from post-consumer or post-industrial PET waste, offering the same chemical resistance and toughness as virgin PETG with a significantly lower carbon footprint. It prints just as reliably as standard PETG and is an excellent choice for environmentally conscious makers who need durable, functional parts.

Glass-fiber PETG blends short glass fibers into a PETG matrix, dramatically increasing stiffness and dimensional stability while retaining the chemical resistance of standard PETG. The added rigidity makes it ideal for structural brackets, jigs, and fixtures that must hold tight tolerances under load.

CPE is a high-performance co-polyester that offers better heat resistance and chemical durability than standard PETG while remaining easier to print than engineering polymers like nylon or polycarbonate. It delivers excellent layer adhesion, low warping, and a semi-glossy surface finish suited to both functional and aesthetic parts.

A classic engineering thermoplastic used in everything from LEGO bricks to car dashboards. ABS offers good heat resistance, impact strength, and can be acetone-smoothed for a professional glossy finish. Requires an enclosure to prevent warping.

The best filament for outdoor use. ASA has 10x better UV resistance than ABS — printed parts will not yellow, crack, or become brittle in direct sunlight. Similar mechanical properties to ABS but with dramatically superior weather resistance.

ABS-CF adds chopped carbon fibers to an ABS base, boosting rigidity and dimensional stability while reducing the warping tendency that plagues plain ABS. The result is a stiff, lightweight composite that vapor-smooths with acetone just like standard ABS, enabling both engineering performance and a polished cosmetic finish.

A flexible, rubber-like filament that can stretch 300-600% before breaking. TPU is the material of choice for phone cases, gaskets, wheels, and anything that needs to bend, flex, or absorb impact. Direct drive extruders handle it far better than Bowden setups.

Ultra-flexible filaments softer than TPU, including TPE (Shore 60A-85A) and TPC elastomers. These materials produce extremely rubber-like parts but are among the most challenging filaments to print. Direct drive extruders are mandatory.

The most widely used flexible filament in desktop 3D printing. TPU 95A offers a rubber-like feel with enough rigidity to feed through most Bowden and direct-drive extruders. It excels for phone cases, gaskets, and wearable prototypes where controlled flex and impact absorption are required.

A softer, more elastic variant of TPU that feels close to silicone rubber. TPU 87A is significantly harder to print than 95A due to its extreme flexibility, but it produces parts with exceptional elasticity and energy return — ideal for true rubber-like applications.

A broad category of rubber-like filaments that combine the processing ease of thermoplastics with the elasticity of vulcanized rubber. TPE filaments are softer than most TPU grades and offer excellent elongation, making them ideal for parts that must stretch repeatedly without tearing.

A semi-flexible engineering elastomer that bridges the gap between rigid PETG and soft TPU. TPC offers excellent chemical resistance, UV stability, and fatigue life while remaining flexible enough for snap-fits and living hinges. It is easier to print than TPU due to its stiffer filament path behavior.

The strongest common 3D printing filament with exceptional tensile strength, wear resistance, and fatigue resistance. Ideal for gears, bearings, and high-stress mechanical parts. Extremely hygroscopic — must be dried extensively and printed from a dry box.

Arguably the toughest non-flexible 3D printing filament. Polycarbonate offers heat resistance up to 150°C and can withstand repeated impacts without shattering. Requires the highest printing temperatures of any common filament and an all-metal hotend.

PC-ABS combines the heat resistance and stiffness of polycarbonate with the impact toughness and printability of ABS, producing a versatile engineering blend used extensively in automotive and electronics. It requires an enclosed printer and careful temperature management but rewards users with parts that rival injection-molded quality.

PA6 is a workhorse engineering nylon known for outstanding toughness, fatigue resistance, and abrasion resistance. It absorbs more moisture than PA12 but offers superior mechanical properties when properly dried, making it the preferred nylon for gears, bushings, and structural load-bearing parts.

PA6-CF blends chopped carbon fibers into a PA6 nylon matrix, delivering exceptional stiffness-to-weight ratio and dimensional stability that rivals CNC-machined metals in some applications. The carbon reinforcement reduces the warping tendency of plain PA6 while adding a matte, professional surface finish.

PA12-CF pairs chopped carbon fibers with PA12 nylon, resulting in a composite that is stiffer and more dimensionally stable than plain PA12 while being easier to print than PA6-CF due to lower moisture sensitivity. It is widely used as a direct replacement for machined aluminum in lightweight structural applications.

PAHT-CF is the highest-performance carbon-fiber nylon available for desktop FFF printers, with a heat-deflection temperature exceeding 180 °C. Built on a semi-aromatic polyamide backbone reinforced with chopped carbon fiber, it targets applications where parts must endure sustained high temperatures, aggressive chemicals, and heavy mechanical loads simultaneously.

Kevlar nylon embeds chopped aramid (Kevlar) fibers into a nylon matrix, producing a composite with outstanding impact absorption, vibration damping, and wear resistance. Unlike carbon-fiber composites that prioritize stiffness, Kevlar nylon excels in applications where toughness and energy absorption are the primary requirements.

An engineering thermoplastic prized for its exceptional stiffness, low friction coefficient, and dimensional stability. POM (also known as Acetal or Delrin) is the go-to material for gears, bearings, and sliding mechanisms, but its poor bed adhesion and tendency to warp make it one of the hardest filaments to print successfully.

A lightweight, chemically inert engineering plastic with excellent fatigue resistance and a near-zero moisture absorption rate. PP is widely used in industry for living hinges and chemical containers, but its extreme warping tendency and poor bed adhesion make it notoriously difficult to 3D print without specialized build surfaces.

The pinnacle of 3D-printable engineering polymers. PEEK offers metal-like mechanical properties, continuous operating temperatures above 250°C, and exceptional chemical resistance. It is used in aerospace, medical implants, and oil-and-gas applications, but requires specialized high-temperature printers that can sustain 400°C+ nozzle and 150°C+ chamber temperatures.

A high-performance amorphous thermoplastic developed by SABIC under the ULTEM brand. PEI offers outstanding flame resistance (UL94 V-0), high continuous-use temperature (170°C+), and inherent chemical resistance. It is widely used in aerospace interiors and electronics enclosures where flame, smoke, and toxicity (FST) compliance is critical.

A dissolvable support material designed to pair with ABS. HIPS dissolves in D-Limonene, a citrus-based solvent, leaving clean supported surfaces on ABS prints. It can also be used as a lightweight standalone material that is easy to paint and post-process.

A water-soluble support material that dissolves in ordinary tap water within 2-12 hours. Best paired with PLA in a dual-extruder setup, PVA allows complex geometries with supports that leave near-perfect surfaces after dissolving.

A composite filament blending PLA with real wood particles (~30% wood fiber). Prints look, feel, and smell like real wood. Parts can be sanded, stained, and finished just like wood. Temperature controls the color — lower temps produce lighter tones, higher temps create darker finishes.

PLA infused with real metal particles (copper, bronze, or steel) that gives prints an authentic metallic weight and finish. Parts can be polished to a real metal sheen and develop natural patina over time. Significantly heavier than standard PLA.

PETG reinforced with short carbon fiber strands for significantly increased stiffness and a professional matte black finish. Easier to print than carbon fiber nylon while offering excellent rigidity. A hardened steel nozzle is mandatory.

A liquid photopolymer cured by UV light in resin (SLA/MSLA/DLP) printers. Resin produces the highest detail resolution of any 3D printing material — perfect for miniatures, jewelry, and dental models. Requires gloves, ventilation, and UV post-curing.

A PLA filament blended with stone-powder additives or co-extruded with contrasting color streaks to produce a natural marble or granite appearance. Each print has a unique veining pattern because the additive distribution shifts throughout the spool. It prints as easily as standard PLA and requires no special hardware.

A multi-color PLA filament that gradually transitions through a spectrum of colors along the length of the spool. Rainbow PLA uses co-extrusion or inline dyeing to create smooth color gradients without any manual filament swaps. The color cycle length varies by brand, typically repeating every 10-30 meters.

A PLA filament infused with strontium aluminate phosphorescent pigments that absorb light and emit a green or blue glow in darkness for several hours. The glow particles are abrasive and will wear down brass nozzles over time. Despite the specialty pigment, it prints with the same ease as standard PLA.

A PLA composite loaded with fine copper powder that gives prints real metallic weight and the ability to develop a genuine patina over time. Copper-fill PLA is significantly heavier than standard PLA and can be polished, brushed, or chemically aged to achieve a true copper finish indistinguishable from cast metal at a glance.

A PLA composite containing finely milled bronze powder that produces prints with real metallic heft and a warm, golden-brown finish when polished. Bronze-fill PLA behaves similarly to copper-fill but yields a warmer tone and is slightly easier to polish to a high shine. Finished prints can be patinated with household chemicals for an antique bronze look.

A PLA composite loaded with carbon black or graphene particles that give printed parts measurable electrical conductivity. Conductive PLA is not a wire replacement — its resistance is high (typically 1-10 kohm/cm) — but it enables touch sensors, capacitive buttons, anti-static housings, and low-current circuit pathways directly in a 3D print.

A water-soluble support material that dissolves completely in warm tap water without any chemicals. BVOH is compatible with a wider range of build materials than PVA and dissolves faster, making it the easiest option for dual-extrusion support structures on complex geometries.

A dedicated support filament engineered to peel away cleanly from the model with minimal force and no water bath. Breakaway support materials bond loosely to common filaments like PLA, PETG, and ABS, leaving a clean surface without the wait time of soluble supports.

A fully biodegradable, bio-based polymer produced by bacterial fermentation of organic feedstocks. PHA decomposes in soil, compost, and marine environments — unlike PLA, which requires industrial composting. It prints similarly to PLA with slightly better flexibility and is the most environmentally friendly filament available for desktop 3D printing.