Materials / Melted Co

Filament guide

Choose a material around what your part needs to do. Start with the comparisons below, or tell us about your project and we’ll help narrow the options.

Find a material for your application

Material availability, color, and suitability are confirmed during quoting.

A quick starting point

What does your part need?

These are starting points for a project discussion, rather than performance guarantees.
Your priorityMaterials to discussTell us
Looks & detailPLA, decorative blendsFinish, color, size, and whether it stays indoors.
Daily functional usePETG, ABSLoads, fit, impacts, and operating temperature.
Outdoor exposureASASun, weather, mounting, and expected service life.
FlexibilityTPU / TPEHow soft it needs to be and how it will bend.
Heat or impactABS, ASA, PC; selected nylon gradesMaximum temperature, duration, and load.
Stiff toolingPETG-CF, PA-CF, glass-fiber-filled blendsDimensions, tolerances, loads, and wear.
Chemical contactApplication-specific review; PP or PETG may be candidatesChemical name, concentration, temperature, and contact time.
Compare your options

Materials & common uses

Relative cost: $ = lower, $$ = midrange, $$$ = higher. These are general comparisons; design work, size, quantity, supports, and finishing also affect the quote.

PLA

Detailed indoor prints

Common uses: Models, signs, display pieces, organizers, and visual prototypes.

Rigid and good for fine detail. Standard PLA has limited heat resistance; tell us if the part will sit in a hot vehicle or carry a sustained load.

Relative cost: $

Ask about PLA

PETG

Everyday functional parts

Common uses: Brackets, housings, organizers, and functional prototypes.

A practical balance of toughness and rigidity. Heat, chemicals, and prolonged sunlight still need application-specific review.

Relative cost: $–$$

Ask about PETG

ABS

Tough indoor components

Common uses: Housings, fixtures, and parts exposed to knocks or moderate heat.

Generally more heat tolerant than standard PLA. For prolonged sun exposure, ASA is usually the better starting point.

Relative cost: $$

Ask about ABS

ASA

Outdoor applications

Common uses: Outdoor housings, signs, covers, and functional components.

Known for UV and weather resistance. Final outdoor life depends on the grade, color, design, and environment.

Relative cost: $$

Ask about ASA

TPU / TPE

Flexible and rubber-like parts

Common uses: Grips, bumpers, protective covers, and cushioning pieces.

Flexibility varies by hardness and formulation. Share how soft the part should be and whether it will contact oils or chemicals.

Relative cost: $$–$$$

Ask about TPU / TPE

Nylon (PA)

Tough parts with wear demands

Common uses: Wear components, functional prototypes, and industrial fixtures.

Grades differ in stiffness and moisture absorption. We review fit, operating environment, and the specific nylon formulation.

Relative cost: $$–$$$

Ask about Nylon (PA)

Polycarbonate (PC)

Impact and heat resistance

Common uses: Rigid housings, tooling, fixtures, and demanding functional prototypes.

A candidate when toughness and heat resistance matter. The exact blend, dimensions, and operating load determine suitability.

Relative cost: $$$

Ask about Polycarbonate (PC)

Polypropylene (PP)

Lightweight parts that flex

Common uses: Flexible components, prototype hinges, and selected chemical-contact applications.

Chemical compatibility must be checked against the actual chemical, concentration, temperature, and exposure time.

Relative cost: $$–$$$

Ask about Polypropylene (PP)

PETG-CF

Rigid functional parts

Common uses: Fixtures, housings, and parts where stiffness and a matte finish matter.

Carbon fiber is added to a PETG base. It does not automatically make a part tougher, heat-proof, or suitable for every load.

Relative cost: $$–$$$

Ask about PETG-CF

Nylon-CF (PA-CF)

Reinforced tooling and fixtures

Common uses: Rigid fixtures, tooling, and engineering prototypes.

Properties depend on the nylon grade and fiber content. Drying, print direction, and testing are important for consistent fit and function.

Relative cost: $$$

Ask about Nylon-CF (PA-CF)

Glass-fiber-filled blends

Reinforced engineering options

Common uses: Tooling and fixtures where a specific reinforced grade fits the job.

The base plastic matters as much as the fiber. We confirm the formulation and printer compatibility during quoting.

Relative cost: $$$

Ask about Glass-fiber-filled blends

Wood-filled / metal-filled

Decorative textures and finishes

Common uses: Display pieces and decorative prints with a distinctive look or feel.

These are filled plastic filaments; metal-filled prints are not equivalent to solid metal parts. Availability varies by formulation.

Relative cost: $$–$$$

Ask about Wood-filled / metal-filled

Reinforced does not mean the same thing in every material.

CF means carbon-fiber-filled; GF means glass-fiber-filled. PETG-CF and PA-CF use different base plastics and have different properties. Reinforcement can increase stiffness, while impact behavior and strength between printed layers still depend on the formulation and print design.

Specialty printing

Support materials & processing applications

HIPS and PVA are support-material options used to help produce certain geometries. They are selected around the main printing material and removal method rather than as a default finished-part choice.

For masking plugs, chemical processing, or demanding functional parts, include the chemicals, temperatures, exposure times, fit, and sealing requirements in your request. Material selection and sample evaluation should reflect the actual process.

Published material properties describe a particular formulation and test method. Part geometry, print direction, and operating conditions affect the finished result.

Discuss your project

Material references

General material guidance informed by manufacturer resources. The specific filament’s technical data sheet is reviewed when needed for your project.

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