Injection Moulding

Injection moulded parts with an inspection report

Injection Moulding Quote | Online Parts

World-class Injection Moulded parts delivered to your door in as little as 15 days. We cater for both low volume or serial production moulding requirements.

Trusted Brands


Our processes icon design


Whether you’re after rapid prototyping and low volume production moulding, our experts in rapid tooling, family moulds, multi-cavity moulds or overmoulding will ensure your samples are ready in days. Injection moulding is the most cost-effective way to make a perfect plastic part at scale. At Geomiq, we’re proud to partner with 260+ experienced and highly vetted manufacturers, who have a proven track record of making high-precision Injection Moulded parts for customers all over the globe. With our partners’ expertise, our engineers’ attention to detail and our entire team’s commitment to exceptional quality assurance at every stage, you can rest assured that with Geomiq, you’ll receive the perfect Injection Moulded parts – the first time, every time



Order low-cost, repeatable plastic components at scale


We’re proud to cater for all your Overmoulding needs


process icon


Rapid turnaround

We’re committed to reducing friction at every stage, so you can be as delighted with the speed of your Injection Moulded parts’ arrival as you are with their exceptional quality. Order now to receive your T1 samples in as little as 15 days!

manufacturing icon


High accuracy

With Geomiq, you can expect high-precision Injection Moulding, our experts in rapid tooling, family moulds, multi-cavity moulds or overmoulding will ensure your T1 samples are ready in 15 days.

automated package carrying icon


Unmatched scalability

From multi-slide single cavity tooling to 6 cavity family tooling, we’ll help you scale your production requirements while taking care of all of the technicalities.

human icon


You own the tool

You’re in full control of the tool and its production, but we’ll store it and help with the logistics whenever you need. You are always our priority – and we give you unmatched support and control in equal measure.

icon with a smiling face, star and heart


Guaranteed quality

All of our experienced, highly vetted and Geomiq-approved manufacturing partners ensure you receive only the highest quality Injection Moulded parts, time after time.

options icon


A wide range of industries

From simple ABS Injection Moulding through to specialist medical Injection Moulding, we’re proud to cater for any and every industry.

Quality assurance at every stage

We’re committed to providing the best quality assurance in the business. We employ highly skilled engineers to triple-check all of your files and parts from initial quote to final inspection – ensuring that you’re happy with your results the first time, every time.

close snapshot of an injection moulding machine
Operator holding a bunch of injection moulded parts

From prototype to production in days

At Geomiq, we know your time is valuable – and we’re passionate about helping you save more of it. When you upload your files, we’ll get you a quote within one business day – and our network of highly experienced partners will ensure the finished products are of the highest quality and made on time.

Leverage the expertise of our global partner network

We partner with 20+  highly vetted and experienced Injection Moulding manufacturers from around the world, so that you can benefit from more options, greater capabilities and the highest standards in the world – all from a single access point.

Engineers checking the manufacturing process of a part


Click on each material to find out more

Tough, opaque, rigid, hard, high gloss.

Tough, semi-rigid, translucent, excellent weatherability/chemical resistance.

Rigid, hard, translucent.

  • Flexible, translucent, durable, good weatherability/low temperature performance, excellent chemical resistance.

Rigid, tough, translucent, resistance to oils, good dialectic resistance, hard wearing.

Rigid, tough, excellent impact resistance, good weatherability and dimensional stability.

Combination of PC and ABS properties (mostly used for electronics enclosures).

Hard, rigid, crystal clear, good weatherability.

Rigid, very tough, translucent, good dimensional stability and electrical properties.

Semi rigid, translucent, excellent chemical resistance, good recyclability.

Rigid, high gloss and transparency, brittle.

Flexible, strong, high abrasion resistance, good weathering properties.

Stuck on which material to choose? We’ll recommend the best material based on your requirements


This factor depends on the intended production run, and the overall lifespan that you’re hoping to get out of your part. For shorter runs, the lower upfront costs of aluminium moulds can lead to a lower overall cost per part. If you plan to use your mould for higher volumes, however, you’ll see your investment in a steel mould pay off.

Heating and cooling times

Aluminium moulds have a higher rate of heat dissipation and can heat and cool much more quickly than steel moulds — typically up to 7 times. Cooling time, especially, makes up a significant portion of overall cycle time in Injection Moulding.

Shrink, warp and other defects

Aluminium means the mould is better able to approach uniform heating and cooling times — and do so more quickly — which provides an advantage in decreasing the number of defective and rejected parts. Non-uniform heating and cooling are among the biggest factors in defects such as sink marks, voids and burn marks.

Ease of modification and repair

Damaged or deformed steel moulds can be very difficult and costly to repair, due to the extreme hardness of the material. In such cases, a new mould will likely be required. Aluminium moulds are much more receptive to repair and, as a softer material, can be more easily modified in cases where production errors may have occurred.

Detailed features

When extremely fine, detailed features are required (e.g. thin, non-uniform walls, less rounded angles and tighter, narrower areas of the mould cavity), steel moulds will often provide better results than aluminium.


Injection Moulding is a formative manufacturing technology, meaning that material is formed from an amorphous shape into a fixed shape defined by a mould tool. Almost every plastic part created today is created by Injection Moulding, as this process allows identical parts to be created in huge numbers, in a short space of time, and at very low cost per part.

The Injection Moulding process:
#1 A mould cavity defines the shape of the part.
#2 Material (melted plastic) is injected under pressure into the cavity.
#3 When the plastic cools it solidifies to take the form defined by the mould.
#4 The part is ejected, and the process repeats from step 2.

Why use injection moulding?

Injection moulding is a manufacturing method for the cost-effective production of intricate plastic parts. Molten thermoplastics and thermosets are injected into metal moulds, after which these materials cool and harden to the configuration of the cavity. The process is low waste and is easily replicated to allow for high production volumes.

When it comes to why you should use injection moulding, consider the following advantages:

Speed and efficiency

The high production output rate of injection moulding makes it extremely cost-effective, allowing manufacturers to benefit from economies of scale, and therefore increased profit margins. The rate of manufacture varies depending on the size and complexity of the mould. Usually, there are only 15 – 120 seconds between each production cycle, which is one of the major reasons why companies use injection moulding during their manufacturing process.

Optimise complex part production

One of the main reasons why manufacturers use injection moulding is that it allows highly complex designs to be produced in large quantities. Millions of uniform parts can be produced accurately and efficiently, allowing manufacturers to save time and money throughout the production process.

Flexibility in material type, colour, and strength

When it comes to why you should use injection moulding, the flexibility of the design process is another major advantage. The strength, type, and colour of the materials used provide manufacturers with endless design options.

Ribs and gussets can be used to make the part either flexible or rigid when addressing strength needs. Master batches, salt and pepper blends, liquid colour, and pre-coloured resins allow the colour of the material to be customised. Alongside this, there are more than 25,000 engineered materials to choose from in the manufacturing process. The flexibility for these design considerations is a major reason why manufacturers use injection moulding.

Waste Reduction

With advance consideration, waste can easily be reduced and recycled during the injection moulding process. The main excess plastic comes from the spruce, runners, and gate locations, and any overflow material that leaks out the part cavity. Scrap rates are typically lower than in CNC machining, which is a major reason why you may opt to use injection moulding.


This is one of the most attractive reasons why you should use injection moulding. The process has the advantage of low labour costs, a high output rate, and high accuracy. Injection moulding is easily automated and requires minimal operator supervision, making it highly cost-effective and efficient for manufacturers.

How can I reduce injection moulding costs?

When it comes to how you can reduce injection moulding costs you should consider the size of the production run, the material, part size, complexity of the design, cycle time, surface finish, product tolerance, and logistics. The easiest way to reduce injection moulding costs is to increase the number of parts produced, as the main cost of injection moulding is the manufacturing time. The choice of material also plays a major part in reducing injection moulding costs.

Designers need to balance material, cycle time, and labour when finalising costs for injection moulding. Choosing the right company and designers to work with greatly influences the final outcome and the overall costs.

So, how can you reduce injection moulding costs? Consider the following:

1. Use CAD/CAM

In-house design using CAD software eliminates the need for a designer and reduces injection moulding costs. This also allows for easy replication of parts in future manufacturing cycles.

2. Remove undercuts

Undercut features can prevent part injection. You can alternatively use draft angles, or change the mould split line position. Eliminating undercuts reduces the tooling costs and the cost of injection moulding overall.

Removing unnecessary features such as logos and part numbers, avoiding cosmetic finishes, and reducing mould thickness all contribute to optimising the design efficiency, in turn reducing the cost of injection moulding.

4. Understand the structural requirements

Parts of your design will be critical to function and strength, but there will also be those that can be hollowed out to reduce the amount of material used. Ribs and gussets can be added to strengthen the part without the need for additional material, which reduces injection moulding costs.

5. Reduce mould temperature

Mould temperatures can be reduced with simpler designs, which lowers the heating cost and reduces cycle time. When it comes to how you can reduce injection moulding costs, feeding the material into the mould at a lower pressure can also prolong the lifetime and reduce wear and tear.

Materials have an enormous impact when considering how to reduce the cost of injection moulding. The stronger the material the more costly it will be. Having a good understanding of the environment the part is to be used in, and the target market of your product is key when working to reduce injection moulding costs.

Core cavities allow the tool to be machined around the shape of the parts and are best used for parts with tall walls and ribbed surfaces. They eliminate the need for steep draft angles and reduce the cost of injection moulding overall.

8. Design self-mating parts

Self-mating parts can be used for two parts that are joined. This reduces the cost of injection moulding as it avoids building two separate parts, and streamlines production time.

Choosing an appropriate mould material allows it to be used multiple times. Using a multi-cavity mould also reduces the cost of production per part, and speeds up production time. This allows higher volumes of parts to be obtained from the same mould, and reduces the cost of injection moulding overall.

Adding high-grade steel inserts to your design strengthens the threaded section, and allows a lower grade body for the mould to be used. This reduces injection moulding costs, without compromising reliability.

What can injection moulding be used for?

Injection moulding can be used for high-accuracy production of plastic parts for a wide variety of industry applications. When it comes to what injection moulding can be used for, it is particularly attractive due to its accuracy and cost-effectiveness as a production method.

Injection moulding involves injecting molten resin into a hollow mould, which is then subjected to high pressure. The liquid polymer cools to the configuration of the mould, and the plastic part is released. Injection moulding can be used for replicating complex manufacturing processes with ease, producing versatile and consistent results at a relatively low cost.

So, what can injection moulding be used for? Take a look at the list of typical uses below:

Plastic bottles:

Plastic bottles are manufactured from Polyethylene terephthalate (PET), often in bulk and in identical shapes and sizes. Injection moulding is particularly ideal in their manufacture, as multiple units can be produced from materials that are durable, yet also lightweight.

Electronic casings:

Injection moulding can be used for manufacturing plastic enclosures for common electronic devices, such as television remotes, computers, medical equipment, or other household electronics.


Injection moulding can be used for manufacturing plastic children’s toys. Uniform items such as figurines and building blocks can be easily produced in the injection moulding process with a high degree of precision and accuracy, alongside customisation with regards to shapes, colours, and sizes.

Agricultural parts:

One of the main advantages of injection moulding is that it can be used for producing parts at a lower cost. Many agricultural parts are now made using plastic rather than metal due to cost efficiency. The advantages of injection moulding are that it can be used for manufacturing materials that provide high impact resistance. Materials can also be customised for temperature and UV resistance to withstand extreme weather conditions and corrosion.

Car parts and other machinery:

Injection moulding can be used for the manufacture of many vehicular components that require high accuracy with regard to size and shape. Bumpers, dashboards, radio components, cup holders, and storage compartments are all plastic features that injection moulding can be used for creating with a high degree of precision and accuracy.

Healthcare applications:

Due to industry requirements for sterile instruments, the healthcare sector relies heavily on injection moulding, as it can be used for the manufacture of many plastic parts which are single-use and disposable. For example, plastic syringes, tubes, medical trays, catheters, and dental and surgical instruments are all uses of injection moulding.

Simple household items:

Injection moulding can be used for the production of many simple household items. The injection moulding manufacturing process is ideal for creating plastic cutlery, plates, bowls, cups, cleaning productions, or storage containers.

Electrical switches:

The size and shape of electrical plugs and switches require a high accuracy manufacturing process, and is one of the main things injection moulding can be used for. Using injection moulding for the manufacture of electrical parts is ideal as results can be produced cheaply and at high volume.

Injection moulding tolerances and best practices are key in order to successfully manufacture your parts. Considering the following during the injection moulding process:

1. Realistic part design

Anticipating injection moulding tolerances and adhering to best practices early in the design phase is key to preventing unexpected costs and time-consuming redesigns later on in the process. It is best practice to design parts with the manufacturing method in mind and consider tolerances for features such as wall thickness, draft angles, and bosses.

2. Choose the optimum material

Injection moulding tolerances depend on the material used. Accounting for material shrinkage rates, flexibility, and other significant mechanical characteristics is an important part of injection moulding tolerances and best practices.

3. Factor in the design of mould tools

As part of determining injection moulding tolerances, it is best practice to use mould tools that are oversized, as this accounts for subsequent material shrinkage during the injection moulding process. Optimum design of manufacturing tools is crucial in ensuring injection moulding tolerances and best practices are adhered to, and that parts cool together and are manufactured properly.

4. Make the injection moulding manufacturing process easily repeatable

Injection moulding manufacturing processes have a range of variable parameters. It is best practice to calibrate processes to minimise variation in manufacturing results. This allows parts to be repeatedly created within the ideal injection moulding tolerance range.

Some of the most important variables to account for when considering injection moulding tolerances are the pressures and temperatures different materials are subjected to. Plastics with higher thermal expansion coefficients will mean the injection moulding tolerances will be more varied, as the size of materials will change at a greater rate at different temperatures. In injection moulding it is best practice to measure these parts at consistent temperatures to ensure accuracy and consistency within the manufacturing process.