Injection Moulding Services in the UK

Injection Moulding, Insert Moulding, Overmoulding
Single, multi-cavity, and family moulds
Plastics, Resins
Ideal for serial production of plastic parts
Rapid tool production in up to 2 weeks

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Injection Moulding Services

Injection moulding is the most cost-effective way to make a plastic part at scale and offers consistent quality for low-to-high-volume manufacturing. Xometry UK offers a vast number of rigid plastics and resins that meet the required structural and cosmetic characteristics. Beyond materials, injection moulded parts can have custom finishing, polishes, or surface textures. Xometry UK offers both high-precision tool manufacturing and injection moulding services.

Xometry Injection Moulding Capabilities

Capabilities

Injection Moulding, Insert Moulding, Overmoulding

Lead Time

Starts at 10 business days

Tooling

Rapid Tooling: recommended for 100-10,000 parts / Production Tooling: recommended for over 10,000 parts

Materials

Plastics and resins

Machines Available

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

Mould Cavity Tolerances

± 0.1 mm when machining the mold and an additional ± 0.05 mm when calculating for shrink rate

Part to Part Repeatability

±0.1 mm or less

Critical Feature Tolerances

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.

Available Mould Types

Steel (tool steel, carbon steel) and aluminum; Production grades range from Class 105, a prototype mold, to Class 101, an extremely high production mould.

Advantages of Injection Moulding with Xometry UK

Rapid Turnaround

We offer fast mould lead times: in as fast as 10 business days for rapid tooling and up to 20 days for production tooling.

Serial Production

Ideal for the production starting from 100 parts.

Precision

Xometry UK offers tight tolerance options in accordance with ISO 16742, up to ±0,07 mm depending on the precision of the mould and size of the parts.

Tooling

Single, multi-cavity, and family mould options.

Material Selection

Vast materials selection allows you to get the desired strength and surface quality.

Quality Control

Our QA department performs strong quality assurance. Xometry UK is ISO 9001 certified.

Xometry Injection Moulding Mould Classes

Mould class	Cycles	Production level	Mould base	Minimum hardness (BHN)	Description
101	>1 million	High	Heat-treated stainless steel	280	Fast cycle times and very high production rate
102	<1 million	Medium-High	Heat-treated tool steel	280	Good for parts with abrasive materials and tight tolerances
103	<50,000	Medium	P20 Steel	165	Widely used for low to medium production parts
104	<10,000	Low	Mild steel, aluminium, or alloys	<165	Good for limited-production parts especially with non-abrasive materials
105	<500	Very low	Soft aluminum, epoxy, cast materials	<165	Mostly used for prototype production

Injection Moulding Materials

Rigid Plastics

ABS
Acrylic
HDPE
Nylon 6 / PA 6
Nylon 66 / Nylon 6/6
PBT
PC (Polycarbonate)
PC-ABS Polycarbonate
PC-PBT
PEEK
PEI (Ultem)
PET
PLA
Polyethylene (PE)
Polypropylene (PP)
Polystyrene (PS)
POM / Delrin acetal
PPE-PS
PPS
PSU

Flexible Plastics

LDPE

Elastomers & Synthetic Rubbers

PVC
TPE (Elastomer)
TPV (rubber)

Injection Moulding Finishing Options

SPI

SPI finishes are a set of standard mould finishes with different polished textures for enhanced properties.

Notes:

We recommend providing a CMF (Colour/Material/Finishing) that defines the visual and tactile characteristics of a product, ensuring design consistency and manufacturing accuracy.
Final result:
- Heavily polished, to semi-gloss to fine and coarse matte depending on the selection
- A1, A2, A3, B1, B2, B3, C1, C2, C3, D1, D2, D3
VDI finishes

VDI

VDI is an international standard for mould texturing of matte surfaces. It is mainly processed by Electrical Discharge Machining (EDM) when mould machining.

Notes:

We recommend providing a CMF (Colour/Material/Finishing) that defines the visual and tactile characteristics of a product, ensuring design consistency and manufacturing accuracy.
Final result:
- Fine-to-coarse grain depending on the selection
- VDI12, VDI15, VDI18,VDI21, VDI 24, VDI27, VDI30, VDI33, VDI36, VDI39, VDI42, VDI45
Custom

If you select a custom finish in the Instant Quoting Engine it will require manual review. Manual quoting usually 1-2 business days.

Notes:

Submitting for manual review with a custom request does not guarantee a quote.