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CapabilitiesCustom Plastic Injection Molding Service


CUSTOM PLASTIC INJECTION MOLDING SERVICE

GET CUSTOM PLASTIC MOLDED PROTOTYPES AND PRODUCTION PARTS IN AS FEW AS 10
BUSINESS DAYS. WE PROVIDE EXPERT ENGINEERING REVIEWS AND $500 OFF YOUR FIRST
MOLD. DOZENS OF MATERIALS AND FINISHES ARE AVAILABLE.

See How It Works
There was an error uploading your files, please try again.


UPLOAD 3D CAD FILE TO START A NEW INJECTION MOLDING QUOTE

STEP | STP | SLDPRT | IPT | PRT | SAT FILES

  
Start Your New Quote
  All uploads are secure and confidential.Xometry's Instant Quoting Engine is
covered by US Pat. Nos. 11,086,292 and 11,347,201. Other patents pending.

Molding Services

How It Works

Materials

Finishes

Design Guidelines

Applications and Benefits

Why Xometry?

Customer Examples



WHAT IS INJECTION MOLDING?

Injection molding is the most cost-effective way to make a plastic part at
scale. The injection molding process involves injecting molten plastic into a
mold tool, then ejecting the solidified part. This process quickly repeats
hundreds or thousands of times, amortizing the cost of the mold tool and driving
down the cost of each unit to a few dollars or less. Since the injection molding
process uses the same mold tool for each part, it offers consistent quality
across every part. Injection molding also has the highest variety of materials,
colors, cosmetics, polishes, and surface textures when compared to CNC machining
or even 3D printing.


Xometry's custom plastic mould service is a service providing on-demand
prototype and production molding. We take a customer-first approach which means
we find the right injection molding supplier within our manufacturing supplier
network to mold the parts the way you need them—without design compromises—at
the right price point. We offer expert consultation on each injection mold quote
and project managers on every order to move your parts from design to
production. Our team has experience in every industry, especially medical
injection molding and liquid silicone rubber molding. First-time buyers receive
$500 off their first mold with Xometry. We offer both domestic and China
injection molding options, as well as ITAR injection molding.

Use the 3D viewer above to preview Xometry’s part rendering features.
 Start Your New Instant Quote



GET FLEXIBLE PAYMENT OPTIONS FOR THE PARTS YOUR BUSINESS NEEDS.

Learn More



INJECTION MOLDING CAPABILITIES

ServiceDetails
Service

Lead Time

Details

Starts at 10 business days, including 24-hour quote responses with
design-for-manufacturing (DFM) feedback

Service

Production Options

Details

Domestic and international

Service

Materials

Details

Most plastics, including custom sourcing and matching; see materials list below

Service

Machines Available

Details

Single, multi-cavity, and family molds; 50 to 1,100+ press tonnage; side actions
including hand-loaded cores

Service

Inspection and Certification Options

Details

Includes FAI and PPAP. ISO 9001, AS9100, ISO 13485, UL, ITAR, and ISO 7 and 8
Medical Clean Room molding.

Service

Tool Ownership

Details

Customer-owned with mold maintenance

Service

Mold Cavity Tolerances

Details

+/- 0.005" when machining the mold and an additional +/- 0.002" per inch when
calculating for shrink rate

Service

Part to Part Repeatability

Details

+/- 0.004" or less

Service

Critical Feature Tolerances

Details

Tighter tolerances can be requested and may increase the cost of tooling because
of additional sampling and grooming. Xometry will mill to a steel-safe condition
on critical features.

Service

Available Mold Types

Details

Steel and aluminum; Production grades range from Class 105, a prototype mold, to
Class 101, an extremely high production mold. Xometry typically produces Class
104, 103, and 102 tools.

This table depicts the general tolerances for Xometry’s injection molding
services and accounts for adequate draft, radii, and coring for
manufacturability. Learn more about our injection molding manufacturing
standards.

Xometry Injection Molding Mold Classes

Class 105Class 104Class 103Class 102Class 101
Class 105

Under 500 cycles. Prototype only. This mold will be constructed in the least
expensive manner possible to produce a very limited quantity of prototype parts.
Also known as a Class V tool.

Example: a one-and-done market test of 100 molded units.

Class 104

Under 100,000 cycles. Low production mold. Use only for limited production
preferably with non-abrasive materials. Low to moderate price range. Also known
as a Class IV tool.

Example: Aluminum or MUD tooling, SPI B-3 finish, hand-loaded cores, and limited
re-runs.

Class 103

Under 500,000 cycles. Medium production mold. This is a very popular mold for
low to medium production needs. Most common price range. Also known as a Class
III tool.

Example: Aluminum or steel tooling, automated lifts or slides, multiple re-runs
with batches between 1,000-5,000 units.

Class 102

Medium to high production, good for abrasive materials and/or parts requiring
close tolerance. This is a high-quality, fairly high-priced mold. Also known as
a Class II tool.

Example: Steel tooling with an SPI A-2 finish, automated slides, scheduled
production cycles.

Class 101

Over 1,000,000 cycles. Built for extremely high production. This is the
highest-priced mold and is made with only the highest quality materials. Also
known as a Class I tool.

Example: Multiple-cavity steel tooling with full automation and overnight
production work centers for dedicated part manufacturing.




ADDITIONAL MOLDING OPTIONS AVAILABLE AT XOMETRY


INSERT MOLDING SERVICE

Make Strong, Functional Prototypes and Production Parts With Insert Molding
Start Your New QuoteInsert Molding Service


OVERMOLDING SERVICE

High Quality Process for Pilot Runs, Low-Volume Production, and Bridge Tooling
Start Your New QuoteOvermolding Service


METAL INJECTION MOLDING SERVICE

Get Complex Small-Sized Metal Parts in High Volume With Xometry
Start Your RequestMetal Injection Molding Service


MEDICAL INJECTION MOLDING SERVICE

High-quality Injection Molded Parts Including ISO 13485 Certified Medical Device
Manufacturing | $500 off Your First Mold
Start Your New QuoteMedical Injection Molding Service


GAS ASSIST INJECTION MOLDING

Get custom gas assist plastic molded prototypes and production parts in as few
as 10 business days. We provide expert engineering reviews and $500 off your
first mold. Dozens of materials and finishes are available.
Start Your New Instant QuoteGas Assist Injection Molding


CHINA INJECTION MOLDING SERVICE

High-quality injection molded parts made in China | $500 off your first mold |
Take the complexity out of molding in China with Xometry's managed service
Start Your New QuoteChina Injection Molding Service


LIQUID SILICONE RUBBER MOLDING

Manufacture custom silicone prototypes and end-use production parts in 15 days
or less in a range of durometers and grades of LSR materials.
Start Your New QuoteLiquid Silicone Rubber Molding


LARGE PART INJECTION MOLDING SERVICE

Get custom plastic molded prototypes and production parts in as few as 10
business days. We provide expert engineering reviews and $500 off your first
mold. Dozens of materials and finishes are available.
Start Your New QuoteLarge Part Injection Molding Service



HOW CUSTOM PLASTIC INJECTION MOLDING WORKS

The plastic injection molding process requires an injection molding machine, raw
plastic material, and a machined mold. The raw plastic material is first melted
in the injection unit and is then injected into the mold—most often machined
from steel or aluminum—where it cools and solidifies into the final plastic
part. 


At Xometry, we first review your plastic injection molding online quote, then
consult with you to ensure your specifications, lead time, and price fit your
project needs. We then use your 3D part data to CNC machine a high-quality
injection mold. Once the molded parts are created, Xometry sends ten part
samples (T1) for approval. Once the mold is refined and approved, Xometry begins
production. Xometry molds a variety of products and parts from the smallest
medical insert up to large automotive, aerospace, and defense parts.




CUSTOM PLASTIC INJECTION MOLDS MATERIALS

Rigid And Flexible Resins
Rigid And Flexible Resins

ABS | Acrylonitrile Butadiene Styrene

Rigid And Flexible Resins

ASA | Acrylonitrile Styrene Acrylate

Rigid And Flexible Resins

CA | Cellulose Acetate

Rigid And Flexible Resins

COPO | Copolyester

Rigid And Flexible Resins

HDPE | High-Density Polyethylene

Rigid And Flexible Resins

LCP | Liquid Crystal Polymer

Rigid And Flexible Resins

LDPE | Low-Density Polyethylene

Rigid And Flexible Resins

PA 6 | Polyamide 6, Nylon 6

Rigid And Flexible Resins

PA 6/6 | Polyamide 6/6, Nylon 6/6

Rigid And Flexible Resins

PARA | Polyaryl Amide

Rigid And Flexible Resins

PBT | Polybutylene Terephthalate, Valox

Rigid And Flexible Resins

PBT-PET | Polybutylene Terephthalate-Polyethylene Terephthalate

Rigid And Flexible Resins

PC | Polycarbonate

Learn more about our plastic injection molding materials.


ELASTOMERS AND SYNTHETIC RUBBERS FOR MOLDING

Elastomers and Rubber-Like Materials
Elastomers and Rubber-Like Materials

EPDM | Ethylene Propylene Diene Monomer Rubber, Viton

Elastomers and Rubber-Like Materials

MPR | Melt Processable Rubber

Elastomers and Rubber-Like Materials

POE | Polyolefin Elastomer

Elastomers and Rubber-Like Materials

PVC | Polyvinyl Chloride (Shore A)

Check out more information about our materials here.


CUSTOM INJECTION MOLDING SERVICE

If you do not see the material stock you are looking for, please choose "Custom"
under the material drop-down on your online quote page and submit it for an
expert engineering review once you have specified features, tolerances,
inspection needs, and quantities required. Xometry can also use customer-sourced
or customer-supplied resin for production projects.


Custom Injection Mold Finishes
Standard Finish

Moldmaker's choice of finish. Typically SPI B-2, depending on geometry and
drafts. Interior, non-cosmetic faces, are typically as-machined.

SPI Finishes

Range of Society of Plastics Industry (SPI) finishes from Grade 3 diamond / high
polish to 320 stone low polish. Finishes include: SPI A-1, SPI A-2, SPI A-3, SPI
B-1, SPI B-2, SPI B-3, SPI C-1, SPI C-2, SPI C-3, SPI D-1, SPI D-2, and SPI D-3

MoldTech Finishes (Mold Texturing)

Range of finishes including matte, swirls, lines, and patterns. Our most common
texture finishes include: MoldTech MT11010, MoldTech MT11020, and MoldTech
MT11030. Other textured finishes can be added by request.

Other Textures - VDI

VDI 3400 Surface Finish (commonly known as VDI surface finish) refers to the
mold texture standard set by Verein Deutscher Ingenieure (VDI), the Society of
German Engineers. This is mainly processed by EDM machining, producing fine to
coarse matte finishes.

As Molded

No secondary polishing or grinding. Part will show tooling marks.

Threaded Inserts

We can install most commonly used standard inserts in UNF and metric sizes.

Pad Printing

Transfer a 2D image onto a 3D part. All images are subject to review.

Laser Engraving

Engrave part numbers, logos, and more onto your parts.

Assembly

Xometry has the ability to assemble and label injection molded parts. Discuss
your needs with your salesperson.

Slide 1 of 1






A guide to injection molding finishes


AN OVERVIEW OF INJECTION MOLDED SURFACE FINISHES

Xometry offers SPI injection molding finishes and Mold-Tech and VDI injection
molding finish options for polished, matte, to textured molded parts.
Read the Full Case Study



VIDEO: 7 WAYS TO SAVE ON INJECTION MOLDING

Learn seven injection molding design best practices to help you get great molded
parts made cost-effectively.



CUSTOM INJECTION MOLDINGS DESIGN GUIDELINES

FeatureTip
Feature

Undercuts

Tip

Reduce undercuts, which will increase the complexity and cost of the tool
ejection mechanisms, by adding in pass-thru coring.

Feature

Wall Thickness

Tip

Prevent wall sink and voids by maintaining an even wall thickness. Thinner walls
reduce cycle time and reduce costs.

Feature

Drafts

Tip

Ensure parts are designed with a minimum draft angle of 0.5°, or up to 5°, for
faces with medium textures.

Feature

Ribs/Gussets

Tip

Ribs should be 40-60% the thickness of outer walls and should still maintain
draft.

Feature

Bosses

Tip

Bosses should be designed at a depth of 30% the wall thickness and with a 30%
edge groove. Attach them to side walls or ribs for structural integrity.

To see these design-for-manufacturing recommendations in detail, view our
Injection Molding Design Guide.


READY TO GET A CUSTOM INJECTION MOLDING QUOTE?

Start Your Quote




APPLICATIONS AND ADVANTAGES OF INJECTION MOLDING

Rapid Prototyping

Low-cost tooling allows for rapid injection molding to be produced in as fast as
10 business days at affordable prices.

Production Parts

Injection molding can be the ideal process for low-volume production molding of
250 units to mass production molding of over 1,000,000 units. Plastic injection
parts will generally perform better than the same part CNC machined or 3D
printed using the same material. Careful selection of the resins allow for a
wide range of properties and solvent compatibility. Molds are CNC machined to
high precision, high tolerances and are able to produce thousands of identical
parts with very small and intricate details.

Range of Industries and Certifications

We offer ISO 9001, AS9100, ISO 13485, UL, ITAR, and ISO 7 and 8 Medical Clean
Room molding.

Injection Molding FAQs
What industries use injection molding?

Injection molding is used across a wide range of industries including aerospace,
medical devices, consumer goods, energy, electronics, automotive, robotics,
toys, and more.

What is the difference between molding and printing?

With molding, plastic or metal parts are created inside a mold. They are then
removed from the mold as fully-formed parts. 3D printing, on the other hand, is
an additive manufacturing process, meaning that the part is built layer-by-layer
using processes like deposition or sintering.

What is the process after ordering?

After receiving the order, the statement of work is reviewed by one of our
manufacturing engineers. A case manager is assigned, and an appropriate
manufacturing supplier is identified. A comprehensive DFM/PEG report is created
and provided for approval. Upon approval, tooling and mold production is
commenced. T1 samples are produced and shipped for approval. Upon approval, the
remaining parts are made.

Who owns the tool?

At Xometry, our customers own their injection mold tools! After a run is
complete, the tool will remain at our facilities. Tools can be shipped to you
upon request; however, you will be responsible for any associated shipping and
packaging costs. Our engineers will work with you regarding tool compatibility
with your equipment if you're unsure.

Can you run different colors of the same material?

Yes, multiple colors can be run even on the same order! When running multiple
colors on the same order, a purge charge will be added.




WHY USE XOMETRY INJECTION MOLD SERVICES?


ENDLESS OPTIONS

Choose from millions of possible combinations of materials, finishes,
tolerances, markings, and certifications for your order.


EASY TO USE

Get your parts delivered right to your door without the hassle of sourcing,
project management, logistics, or shipping.


VETTED NETWORK

We are ISO 9001:2015, ISO 13485, and AS9100D certified. Only the top shops that
apply to become Suppliers make it through our qualification process.




XOMETRY PLASTIC INJECTION MOLDING CASE STUDIES

Article

Case Study: Thermaco Uses Xometry Injection Molding to Scale Global Product Line

  4 min read
Article

Case Study: An Archer Aims, Shoots, and Lands His Shot with Xometry Injection
Molding

By Serena Ngoh
  7 min read
Article

Case Study: Combating COVID-19 with a Contactless, AI-Based Thermal Imaging
Device

By Serena Ngoh
  4 min read

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