CNC machining service | online parts

Prototype or production, we offer world-class CNC machined parts delivered to your door as little as 5 days. With a huge variety of CNC machining materials and secondary finishes available you can be sure to get what you need.

Parts in as little as 5 days
90+ materials & finishes
ISO9001:2015 & ISO13485 Accredited

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Our CNC machining service capabilities

Geomiq takes on prototype and production machining, we can support one-offs, batch production and ongoing call-off orders in line with your requirements. We take on challenging complex jobs, be it complex CNC part geometry, specialist materials, extremely tight tolerances or specialist finishing. We have earned our reputation amongst the worlds leading companies, working on the very latest of technologies.

3, 4 & 5 Axis CNC Milling

3, 4 & 5 Axis CNC Milling

Multi-axis 3 & 5 axis CNC machining from our global supply chain provides one-off CNC prototypes to large-scale production, ensuring consistent quality and lead times. Our partners have a combined total of over 2000 CNC milling machines meaning we can produce tolerances down to +/- 0.002mm and lead times in as little as 5 days.

CNC Turning

CNC Turning

CNC Turning from our global supply chain offers one-off CNC prototypes to large-scale production. Our partners have a combined total of over 1400 CNC lathes meaning we can produce tolerances down to +/- 0.001mm and lead times in as little as 5 days. Automated bar feeders and chucks can allow rapid prototyping or highly competitive mass production.

Electrical Discharge Machining (EDM)

Electrical Discharge Machining (EDM)

EDM spark and Wire erosion available for high-precision cutting and shapes that are unable to be cut by a rotating mill. With tolerances down to as little as +/- 0.001mm we can produce parts that have both milled, turned and EDM machined features. Lead times from 7 days allows rapid turnaround for your projects.

Order high-quality CNC machined parts online

Geomiq provides premier CNC machining services in the UK, proudly partnering with 1100+ highly vetted CNC specialists. With their proven track record in crafting high-quality mechanical parts globally, coupled with our team's expertise and commitment to rigorous quality assurance, you can trust Geomiq to deliver flawless CNC machined parts every time.

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We’re committed to reducing friction at every stage, so you can be as delighted with the speed of your CNC Machined parts’ arrival as you are with their exceptional quality. Order now to receive your parts in as little as 5 days!



Our standard CNC tolerance is +/- 0.127mm, and when you use our tolerance configurator, you can expect precision machining down to +/- 0.005mm.



Whether you’re after a one-off prototype or 10,000 units at the most competitive price, Geomiq’s world-class supply chain can deliver.



We offer high-quality finishing processes for most CNC Machined parts; from anodising, polishing and plating, to powder coating and more.



We offer over 100 plastic and metal materials, and take great care to ensure the right material is used for every part. Please get in touch if the material you require is not listed.



With customers in every industry, from aerospace, defence, robotics, medical and automotive to electronics, Geomiq has a wealth of experience meeting a diverse range of requirements. Calling on our world-class supply chain, we can meet any requirements.

Our CNC machining process:

Get a quote

Upload your CAD to our platform, select your lead time and get an instant or 24hr CNC quote.


We select the most suited manufacturer for your order, with production starting immediately.

Quality control

We gaurantee your order arrives to specification, with our industry leading virtual and physical quality standards.


We ship your parts on express services where possible, including physical delivery notes and inspection reports.

Quality assurance at every stage

Quality assurance at every stage

We are committed to offering the best quality assurance in the business. Our highly skilled engineers triple-check all your files and parts, from the initial quote to the final inspection, ensuring your satisfaction the first time, every time.

From prototype to production in days

From prototype to production in days

At Geomiq, we understand the value of your time, and we are dedicated to helping you save more of it. Upon uploading your files, we provide a quote within one business day, and our network of highly experienced partners ensures the finished CNC products are of the highest quality with short lead times.

Leverage the expertise of our global partner network

Leverage the expertise of our global partner network

We collaborate with 180+ highly vetted and experienced CNC manufacturers from various countries. This allows you to access a world-class supply chain, offering greater capabilities and the highest standards globally, all from a single access point.

CNC machining materials

    Post-processing and finishing options


    The most common CNC machining finish and all machining marks are visible on the material. This is the cheapest finishing option as there is no post-processing required. Roughness Average (Ra) values can be specified down to 0.2Ra in most cases.


    There are various Hand polishing is chosen when high cosmetic surfaces are required. The labour intensive method means that this is one of the most expensive options although. Some areas may not be accessible to polish.


    Used to hide machining marks and sharp edges, creating an even texture on the outside surface of a part. Different grades of bead blasting are available, ranging from light dusting to a heavy blast that has heavy pitting by varying the bead size and blasting pressure.

    Painting and powder coating

    Powder coating is a method of painting that improves strength, corrosion resistance and enhances cosmetic appearance. A range of colours including RAL reference codes are available. Thickness is typically 50μm-150μm. Matte (<30GU) and Gloss levels (>70GU) can be specified also.

    Galvanic zinc

    Zinc is used as a post process coating for subsequent powder coating or corrosion protection. Used in automotive and construction applications primarily it is a low cost protective coating. Geomiq offers transparent passivated, iridescent passivated and iridescent passivated and sealed Galvanic Zinc plating.

    Nickel plating

    Nickel plating increases cosmetic appearance by adding a think layer of chromium that is shiney, as well as providing additional corrosion and wear resistance. Thickness is typically between 2.5μm-150μm

    Chrome plating

    Chrome plating increases surface hardness, cosmetic appearance by adding a think layer of chromium that is shiney, as well as providing corrosion resistance. Thickness is typically between 0.1μm-10.5μm

    Anodising type II

    Anodising is the most popular surface treatment for Aluminium parts as it adds strength, corrosion resistance and enhances cosmetic appearance. A range of colours are available and thickness is typically 8μm-16μm depending on colour. Matte (<10GU) and Gloss levels (>20GU) can be specified also."


    Quenching (Quench Hardening) is heating and then cooling a material at a controlled rate to achieve a target microstructure, this is used to increase hardness and strength levels of the material. We offer quenching with in-house hardness testing as per your requirement or a range of pre-treated materials.


    Tempering is typically used after quenching by heating a material and then cooling it slowly. We offer tempering with in-house hardness testing as per your requirement or a range of pre-treated materials.


    Normalising is heating and holding a material at a specific temperature for a set time period and then letting it cool back to room temperature in air, it is used to increase ductility and often reduce the hardness. We offer normalising with in-house hardness testing as per your requirement or a range of pre-treated materials.


    Vapour Polished Acrylic
    Stainless Steel 316
    Aluminium 7075-T6
    D2 Tool Steel

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    Our distributed network of CNC machining manufacturers

    We have hundreds of global manufacturing partners that ensure we are highly competitive and have unlimited capacity. We can route jobs geographically to reduce lead times and shipping costs as well as reducing the carbon footprint of each order. All of our CNC machining partners have stringent onboarding and we use data to track on-time deliveries, quality and pricing. This ensures that your job and CNC parts are always with the most suited supplier.

    CNC machining factory in Shenzhen
    CNC machining factory in Oxford
    CNC machining factory in Porto

    CNC Design rules and tips:

    • 1. Maximum part size

      Maximum part size depends on your machine size; giant machines can produce parts bigger than 2mx0.8mx1m, five-axis CNC machines have a smaller volume.

    • 2. Take note of wall thickness.

      • Metals: Minimum 0.8mm Plastics: Minimum 1.5mm
      • Absolute minimum 0.6mm

      Thin walls on a part allow for more opportunity to break, no matter what the material. Wall thickness is proportional to the stiffness of the material, so thinner wall thickness leads to vibrations when machining. As a guideline, keep this in mind: for metals, try not to go below 0.8mm, and plastics not less than 1.5mm. Try to design your part from sheet metal instead or use another manufacturing method if required.

    • 3. Height of tall features

      • Typically Maximum: 4 x part length

      Vibration becomes a problem when machining tall features. Try to work by the ratio of max height is 4 x the length to minimize machine vibrations.

    • 4. Try not to use too many tolerances in your design.

      • Standard: ±0.125mm
      • Minimum: ±0.001mm

      Tolerances are necessary for a design; excess tolerancing only increases machining time and cost. Tight tolerances should only be specified where essential and should keep with the CNC machines tolerance ability. Some standard tolerance to stick by for most CNC machines is ±0.125mm, whereas down to ±0.001mm is feasible. Tolerances should be defined on all critical features.

    • 5. Holes should have accurate length to width ratios.

      • Maximum: Hole length = 4x Hole diameter

      Try to work with the ratio hole diameter is less than 4 x the length of the hole. If the hole is too deep, this results in the tool deflecting and makes it difficult to remove the chips, leading to tool fracture. An example is a hole 10mm wide that should not be more than 40 mm deep. Deeper holes need to be machined with larger diameter cutting tools; bear this in mind.

    • 6. Limit thread length

      • Maximum thread length=3 x hole diameter
      • Recommended: M6 or higher
      • Smallest: around M2

      Strong threads are formed in the first few turns, so long threads are pretty unnecessary; as a rule of thumb, try to design your thread three times longer than the hole diameter. Choose larger threads if possible; they are easier to machine.

    • 7. Avoid designing features that can’t be machined

      Not all features can be machined on a CNC. If one sticks to some simple guidelines when designing, the part will be redesigned before machining.

      One needs to understand the machine’s capability; for example, A 3 axis machine cannot machine negative angles. Another example is one cannot machine curved holes on a CNC; to do this, one would have to split the part into two and reattach the two halves. EDM is a better process for this.

    • 8. Try to design functional parts that can be machined.

      When designing, try to think about the machining processes involved in creating the part; one needs to think practically about how the machine will move and if the part is to be machined on a three-axis or five-axis machine. Three-axis machines can only work with simple geometry and curves, whereas five-axis machines can manage more complex parts.

    • 9. Size of small features

      • Minimum: 2.5mm
      • Smallest: 0.100 mm

      Most CNC machines use a minimum of a 2.5mm tool diameter; this can be considered when designing. It is feasible to develop features smaller than 0.1mm, although this should be avoided.

    • 10. Design restrictions

      One needs to think of the surfaces that can be machined with the CNC tool, internal geometries such as a curved hole are impossible to machine, and such a part would need to be split into two separate parts machined separately and then combined to produce that geometry.

      The vertical parts of a machined part will always have a radius due to the tool geometry – drills are always round and can only cut radii.

      The geometry of the part decides how it is held in the CNC machine; this impacts the cost; if it can’t be bolted down, it would need to be clamped in place, which could add to a positional error when completing subsequent runs.

      Workpiece stiffness can change when thin walls are machined into the parts leading to the vibration of the part. Take this into account when designing.

      Read Geomiq’s CNC Design Guide > 

    FAQ CNC machining

    • How does CNC machining work?

      CNC (Computer Numerical Control) machining is a manufacturing process where computerized systems control the movement of cutting tools to shape and cut materials with precision. The process starts with creating a digital design or CAD (Computer-Aided Design) model, which is then converted into machine-readable instructions. These instructions guide the CNC machine in accurately cutting, drilling, milling, or turning the material to create the desired shape.

    • What industries commonly use CNC machining services?

      CNC machining services are widely used in various industries, including aerospace, automotive, electronics, medical, engineering, prototyping, and manufacturing. These industries rely on CNC machining for precise and efficient production of parts and components.

    • How accurate is CNC machining?

      CNC machining is known for its high accuracy and precision. Modern CNC machines can achieve very tight tolerances, typically ranging from a few micrometers to a few hundredths of a millimeter, depending on the machine and the specific requirements of the project.

    • Can CNC machining produce complex or intricate designs?

      Yes, CNC machining is capable of producing complex and intricate designs with great precision. The ability to program the movements of the cutting tools allows CNC machines to create intricate geometries, cavities, undercuts, and fine details that may be challenging or impossible with traditional machining methods.

    • How can I select a reliable CNC machining service provider?

      When selecting a CNC machining service provider in the UK, consider factors such as their experience, expertise, reputation, capabilities, equipment quality, turnaround time, pricing, and customer reviews. Look for companies with a proven track record, certifications, and a commitment to quality control to ensure reliable and consistent results.

    • What types of CNC machining services are commonly offered?

      Common CNC machining services include milling, turning, drilling, grinding, and EDM (Electrical Discharge Machining). These services cater to a wide range of applications and materials, such as metal, plastic, wood, composites, and more.

    • Can CNC machining services accommodate both small and large production runs?

      Yes, CNC machining services can accommodate both small and large production runs. CNC machines are highly versatile and can be programmed to produce a single prototype or thousands of identical parts with consistent quality and precision.

    • What are the steps involved in the CNC machining process?

      The CNC machining process typically involves the following steps:

      • Designing the part using CAD software.
      • Converting the design into machine-readable instructions (G-code).
      • Setting up the CNC machine, including securing the material and loading the necessary tools.
      • Preparing the CNC program and transferring it to the machine.
      • Running the program and monitoring the machining process.
      • Inspecting the finished part for quality and accuracy.

    What our customers say

    • Oz Andrews


      Tyba Home

      We use the Geomiq platform as it is the easiest and fastest way to get any of our parts made. They are the obvious choice, highly recommended!

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