The Ultimate Guide to Polymer 3D Printing


Everything you need to take your idea from concept to prototype to production—faster and more cost-effectively.

Our world has become a personalized, on-demand marketplace, and additive manufacturing enables us to make more things faster and better than we could before. Materials have also advanced to where we can now use different types of engineered plastics and composites for prototyping and production.

Part finish has improved with automated post-processing, updated build prep software, new additive manufacturing equipment suppliers like Carbon and HP, and the ability to create custom finishes and textures that are 3D printed directly onto your parts. With these vast improvements in technology, material, and part finish, 3D printed parts are not only strong enough to compete with the likes of machined and injection-molded parts, but they can look the part, too.

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The Benefits of Polymer 3D Printing

Whether you're evaluating a new manufacturing approach or trying to improve speed, cost, or performance, polymer 3D printing offers several key advantages over traditional methods.

Cost

Polymer 3D printing can be the most cost-effective manufacturing process for prototyping, small production runs and applications, and large custom production runs.

Traditional prototyping methods like CNC machining require costly machines, fixtures, and setups, while injection molding needs expensive metal tools with minimum order runs.

With polymer 3D printing, the ability to make complex shapes and parts more easily eliminates the high costs associated with programming and setups. Polymer 3D printing also allows you to make only what you need, minimizing material costs and minimum part orders—all while running unattended.

Design Flexibility

Polymer 3D printing allows you to design and print more complex geometries—without the constraints of traditional manufacturing.

Traditional manufacturing methods often can’t achieve this without incurring high costs and long lead times. Some of the 3D printing technologies that can help you efficiently produce more complex geometries include:

  • Lattice structures — Create repeating patterns that form three-dimensional shapes, enabling lighter, stronger parts and new design possibilities.
  • Finite element analysis (FEA) — Anticipate real-world physical effects like vibration, fluid flow, and heat to validate performance before production.
  • Carbon Design Engine — Create performance-oriented lattice structures and move from idea to functional part in just hours.

Speed

You can save significant product development time and cost by using polymer 3D printing to iterate prototypes—or move directly into production.

Unlike injection molding, no tooling is required. With polymer 3D printing, you can design a part, manufacture it, and test it—all within 24 hours.

Need parts fast? Let’s talk through your timeline.

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The Types of Polymer 3D Printing Technology

Choosing the right process is critical to achieving your desired performance, cost, and timeline.

There are several types of polymer 3D printing, including:

  • Micro Digital Light Processing (DLP)
  • Carbon Digital Light Synthesis (DLS)
  • Stereolithography (SLA)
  • HP Multi Jet Fusion (MJF)
  • Fused Deposition Modeling (FDM)
  • Selective Laser Sintering (SLS)
  • PolyJet

To select the right polymer 3D printing process for your application, it’s important to understand the strengths of each process and map those attributes to your product development needs.

Micro Digital Light Processing (DLP)

For extremely precise, miniature parts

Micro DLP printing uses UV light to rapidly photopolymerize layers of resin. Unlike traditional DLP technologies that have resolutions between 75 and 100 microns, micro DLP prints parts at a resolution between 1-5 microns with a layer thickness down to 1 micron.

Benefits of Micro DLP

  • High-resolution
  • Lower cost—no need for tooling
  • Supports diverse applications
  • Delivers unparalleled precision

Best used for:

  • Prototypes
  • Low-volume production parts
  • Parts requiring high precision
  • Parts with internal passageways

Micro DLP Equipment

Fabrica Tera 250 Micro 3D Printer

The Fabrica Tera 250 allows us to deliver prototypes in five business days or less. Key performance specs:

  • Build envelope - 50 x 50 x 100 mm
  • Build volume - 0.25 L
  • Max resolution (XY) - 0.001 mm
  • Max resolution (Z) - 0.001 mm

Carbon Digital Light Synthesis (DLS)

True digital manufacturing for end-use parts

Carbon DLS is a photochemical process that uses both light and oxygen to build parts with exceptional mechanical properties.

After parts are built continuously, they are washed, supports are removed, and they are thermally or UV cured to achieve final strength.

Benefits of Carbon DLS

  • Wide range of elastomeric and rigid materials
  • Biocompatible and sterilizable options
  • Reduced time to market
  • Air-tight, leak-proof parts
  • Outstanding surface finish

Best used for:

  • End-use production parts
  • Digital inventory and on-demand production
  • Part consolidation
  • Complex, organic designs

Stereolithography (SLA)

High-precision prototypes for development

SLA converts liquid resin into solid parts using an ultraviolet laser—building thin layers with high accuracy and smooth finishes.

Benefits of SLA

  • Highly accurate
  • Smooth surface finish
  • Easy to finish and paint
  • Moisture resistant
  • Heat resistant*
  • Quick turnaround

Best used for:

  • Fit and function testing
  • Master patterns
  • Marketing samples
  • Clear parts
*As of 5/1/26, our only SLA high heat option is SL 5530. In order to achieve these properties, it must have a high heat bake during post-processing.

HP Multi Jet Fusion

Production-grade parts at scale

HP Multi Jet Fusion is a powder-based process designed for scaling from prototype to full production.

Benefits of HP Multi Jet Fusion

  • Strong, durable thermoplastics
  • Fine feature resolution
  • Fast, nested builds for scale
  • Isotropic mechanical properties
  • No supports required

Best used for:

  • End-use production
  • Snap fits and living hinges
  • Replacement parts
  • Leak-proof components

Not sure which process fits your application? We’ll walk you through it.

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Fused Deposition Modeling (FDM)

Cost-effective and versatile 3D printing

FDM is one of the most widely used 3D printing processes due to its accessibility and ability to use real engineering thermoplastics.

Benefits of FDM

  • Tough, durable parts
  • Real thermoplastics like ABS, PC, and Ultem
  • Low cost
  • Easy to implement

Best used for:

  • Jigs and fixtures
  • Strong prototypes
  • Low-volume production
  • Durability testing

Selective Laser Sintering (SLS)

Durable parts without support structures

SLS uses a laser to fuse powder materials, allowing for complex geometries and full build chambers without supports.

Benefits of SLS

  • Tough, functional parts
  • Thermoplastic materials
  • Scalable production
  • Heat resistant and biocompatible options

Best used for:

  • End-use parts
  • Durable housings
  • Snap fits and hinges

PolyJet

Multi-material, high-detail prototypes

PolyJet uses an inkjet process to create smooth, highly detailed parts with multiple materials and colors.

Benefits of PolyJet

  • High accuracy and fine detail
  • Smooth finishes
  • Multi-material and multi-color capability

Best used for:

  • Design validation
  • Marketing models
  • Medical models
  • Over-molded samples

Post-Processing Options

Finishing is critical to achieving production-ready parts. TTH offers a wide range of post-processing capabilities depending on your application requirements.

Available finishes include:

  • Tumbling
  • Vapor smoothing
  • Media blasting
  • Inserts and assembly
  • Painting (flat to gloss)
  • Color matching
  • Dyeing and clear finishes
  • Textures (printed and post-print)
  • Plating and metalizing
  • EMI shielding
  • Soft-touch coatings

More available upon request.

Polymer 3D Printing FAQs

Q: Can I finish and paint parts?

A: Yes—TTH offers a full range of finishing options, including painting, textures, metalizing, and plating.

Q: Should I print threads or use inserts?

A: We recommend heat-staked inserts whenever possible; however, some materials cannot accommodate this. In these situations, we can use press-in inserts or glue them into the part. It is best to print threads in and chase them during finishing for optimal fit.

Q: What file format do I need?

A: STEP, IGES, Parasolid, or STL files are all commonly used. If these formats are not available, we are happy to try to work with you on converting another style.

Q: How large can parts be?

A: Parts can be built in sections and bonded—we’ve produced parts up to six feet in diameter.

Q: What tolerances can be achieved?

A: Tolerances vary by process, material, and geometry, and are confirmed on a case-by-case basis.

Q: How can I reduce costs?

A: Common strategies include consolidating parts, optimizing geometry, and designing specifically for additive manufacturing.

Your Full-Service Partner for Polymer 3D Printing

Ready to find the right polymer 3D printing solution for your project?

At The Technology House (TTH), we specialize in creating custom, intricate polymer 3D printed parts for demanding industries. From design through prototyping and production, our integrated, all-under-one-roof approach allows you to take your concept to market faster and more cost-effectively.

Personalized quoting—no auto-quote. We take a consultative approach to determine the best result for your project.

Request a Quote Talk to a Technical Specialist