High precision plastic and metal
parts & prototypes delivered fast
Over 100 high precision CNC mills, lathes, countersinks, wire EDMs, and surface grinding machines help us deliver custom parts for many industries. Our massive in-house capacity means that you are at the front of the line every time, whether you need a one-off prototype or low-volume production parts in the tens of thousands.
| Our Capabilities | Description |
| Machine size | 3000 x 1200 x 850 mm |
| Materials | 50+ metals, plastics, carbon fibre |
| Standard tolerance | ±0.05mm (metals), ±0.2mm (plastics) |
| Lead time | From 4 days |
Get a quote / Get in touch
Please use the following formats:
.stl, .obj, .wrl, .step (.stp), .iges (.igs), .3mf, .dxf and .zip
100mb max file size (per file)
If you have a file type not listed, please contact us to discuss first.
For larger files please use this link
We have 15+ high quality chemical and mechanical finishing options available for CNC metals and plastics.
“What I personally value in our cooperation with HLH is that they’re able to produce what we need, and we don’t need to conform to lower standards.” — Daniel Droźdź, CAD engineer of Smartflyer
We understand the needs of engineers and industrial designers. When it comes to precision machining, our approach is: deliver parts fast without compromising on quality.
At HLH, tolerances are controlled to ISO-2678 Fine (F) for metals and Medium (M) for plastics as standard. Tighter tolerances available on request.
| Metals With Drawing | Metals No Drawing | Plastics With Drawing | Plastics No Drawing | |
|---|---|---|---|---|
| Linear Dimension | ±0.01mm | ISO 2768 Fine | ±0.05mm | ISO 2768 Medium |
| Hole Diameters | ±0.008mm | ISO 2768 Fine | ±0.05mm | ISO 2768 Medium |
| Shaft Diameters | ±0.004mm | ISO 2768 Fine | ±0.05mm | ISO 2768 Medium |
To achieve better part quality and dimensional accuracy, it is important that your CNC model closely follows a set of geometric recommendations. Learn how to design threads, cavities, internal edges and more.
CNC vs 3D Printing
Compared with parts manufacturing through additive methods, CNC machined parts are functionally stronger and typically have superior production quality and finish. Thus, CNC machining is typically used in the mid to late stages of product development when parts are ready to be tested for functional accuracy.
Custom CNC Machining is Used For
High precision parts and rapid prototyping metal parts, performance plastics, and rapid low-mid volume production runs. When it comes to CNC machining, we provide highly flexible rapid low volume manufacturing solutions that deliver superior parts, fast.
Advantages of CNC Machining
CNC (or computer numerical control) machining is a subtractive manufacturing process in which pre-programmed software and code dictates the movements of factory tools and machinery. It delivers high speed, high precision, and robust manufacturing solutions. You take a block or billet of material and cut away at it with a series of tools and drill bits, removing material to make CNC machined parts.
CNC parts could cost from as low as $100, or as high as $1000 or more. The price depends on the material, tolerance, machining hours, geometrical complexity, part size or quantity.
The two primary CNC machining processes are CNC turning and CNC milling.
At HLH, we use a third CNC machining process known as EDM or electrical discharge machining.
Many industries rely on CNC machining for high-precision parts and prototypes, including:
For features left unspecified, standard tolerances are used. The standard machining tolerance is ISO 2768 Fine (F) for metals and Medium (M) for plastics. Tighter tolerances are available on request.
Generally, we would recommend CNC machining parts over 3D printing, as CNC machined parts are functionally stronger than those 3D printed and typically have superior production quality. This is why CNC machining is typically used in the mid to late stages of development, when parts are ready to be tested for functional accuracy.
