Online 3D Printing Service for Custom Parts

Great Plastics makes it fast and easy to get high-quality 3D printed parts — no matter what stage your project is at.

Upload your 3D designs for an instant quote and parts as fast as next-day.

Custom Plastic

Custom Plastic 3D Printing Services

Accelerate your product development with Great Plastic’s industrial-grade plastic 3D printing services. From rapid prototyping to low-volume production, we deliver precision FDM, SLA, SLS, and MJF 3D printed parts in engineering thermoplastics. Get functional prototypes.

3D Printing Processes

Custom Plastic 3D Printing Services

Select the right additive manufacturing technology for your application from our three advanced processes.

Lightweight Lattice PEEK Drone Frame 3D Printed Component

Fused DepositionModeling (FDM)

Low cost process for early stage prototypes.

SLS Printed High-Temperature Polymer Flow Components

Selective Laser Sintering(SLS)

Ideal for functionaltesting, low to midvolumes.

Stereolithography (SLA) High Precision Resin Housing Part

Stereolithography (SLA)

A high resolution,production gradetechnology.

Hybrid: 3D Printing + CNC Machining

Combine design freedom with ±0.03mm precision.

Why Hybrid Manufacturing?

  • Parts with complex internal channels
  • Tight tolerances on mounting faces
  • Precision bores and sealing surfaces
  • Custom Enclosures with machined threaded holes

Example: Print a high-temperature drone frame blank with SLS PEEK, then CNC machine the motor mounting planes and locating pin holes for precise coplanarity.

Our Services

3D Printing Processes

Compare 3D Printing Processes

New to our 3D printing service and not sure which additive technology is right for your 3D design? Compare the capabilities of each process below to see what fits your application’s requirements.

Commercially viable Limited use (R&D / niche) Not supported
Material FDMFused Deposition SLSPowder Sintering SLAStereolithography HybridPrint + CNC
Takeaway: Select a material and process combination to review its compatibility, application note and available size range.

Materials we work

3D Printing Materials

PEEK

High performance

high heat, chemicals, wear and strength in printed or machined parts.

PPS

Chemical & stable

chemical resistance, dimensional stability and cost-aware high-performance parts.

PI

High temperature

extreme continuous heat and wear; print route reviewed case by case.

PEI

Electrical & stiff

electrical insulation, stiffness, flame behavior and stable printing.

PAI

Extreme duty

highest load, wear and heat demand; typically machined from stock.

Not sure which plastic?

Send the drawing — we review material fit during the engineering review.

3D printed parts

3D Printed Parts Made by Great Ceramic

With over 65,000 customers from every industry, including aerospace, defense, robotics, medical, machinery, automotive and electronics, we have extensive experience meeting a diverse range of 3D printing requirements, from prototyping to 3D production: Visual aids, concept models, injection-molding prototypes, form-fit & function prototypes, tooling and casting patterns, jigs, grips and fixtures, and durable end parts.

Surface Finish

Surface Finish Options for 3D Prints

Unfinished Dots, or standing "nibs," remain evident on the bottom of the part from the support structure remnants.
Natural Supported surfaces are sanded down to eliminate the support nibs.
Standard Supported surfaces are sanded, and the entire part is finely blasted for a consistent look. Note that the layers are still present.
Custom Soft-touch paint, clear part finishing, painting, masking, color matching, decals/graphic, and texture finishes are available.

Custom Finishing

Looking to boost the strength, clarity, or appearance of your 3D-printed parts? Choose from microfluidic and micro-resolution materials, metal plating, secondary machining, and custom finishes like painting, clear coating, and decaling.

As-printed / Natural / Standard sand & bead blast Compatible for all five materials. Removes support marks and delivers a uniform matte finish. Layer lines remain visible.
CNC Machining / Mechanical polishing Fully supported, ideal for tight-tolerance critical surfaces.
Annealing (Heat treatment) Available for all high-performance thermoplastics to relieve residual stress and improve interlayer bonding. Not the same as metal heat treatment.
Decals Compatible on all materials for logos and graphics.
Painting Available with special plasma surface pretreatment for coating adhesion. Not recommended for high-temperature or chemical-exposed applications.
Dyeing Limited to SLS powder-based PEEK and PEI parts; not effective for FDM dense filament parts.

WHY CHOOSE US

Why Choose Great Plastic for Plastic 3D Printing?

Unlike generalist 3D printing services, Great Plastic specializes exclusively in engineering plastics and polymer manufacturing. With 15+ years of expertise.

No Minimum Order Quantity

Order exactly what you need—from single functional prototypes to 1,000+ production parts without expensive tooling.

Hybrid Manufacturing

We combine 3D printing with CNC post-machining. Print complex geometries, then achieve ±0.03mm precision with our CNC machining services.

Strict Quality Control

Every part undergoes comprehensive visual inspection and dimensional verification before shipping ensuring tight tolerances.

Advantages & Applications

Advantages of 3D Printing

Building parts layer-by-layer brings about many benefits that open up design possibilities that were previously unachievable through traditional processes like injection molding, machining, or casting.

  • Complex, organic geometries with limited impact on part cost
  • Consolidation of multi-component assembly into a single part
  • No upfront tooling costs
  • Fast production for parts within 24 hours
  • Internal features for advanced heat transfer and flow applications
Carbon-filled PEEK 3D printed aerospace assembly.
3D printed PEEK high temperature polymer brackets, hybrid additive + subtractive manufacturing component.

Common 3D Printing Applications

Additive manufacturing can be leveraged for both rapid prototyping and production in aerospace, medical, automotive, and other large industry sectors. Examples of typical parts, include:

  • Form and fit prototypes
  • Housings and enclosures
  • Medical devices
  • Snap fits
  • Jigs and fixtures
  • Heat exchangers and heat sinks
  • Engine components
  • Fuel injectors
  • Surgical instrumentation

Get an Instant 3D Printing Quote

Get a free quote within 24 hours.

Our engineering team will review your design, recommend optimal materials, and provide detailed pricing for your custom 3D Printing parts.