Resources
/
Technical Toolbox
/
CNC Tips and Tricks

CNC Tips and Tricks

As we evolve, we learn ways to make things easier – to take up less of our time and effort.

Luke Smoothy.
Luke Smoothy
Published
March 10, 2022
/
Updated
October 6, 2025
A CNC machine.

As we evolve, we learn ways to make things easier – to take up less of our time and effort. CNC machining is a perfect example of this – advancing from manually-operated factory machines requiring constant supervision to almost autonomous appliances. Though CNC machining is a time and cost-effective endeavour in itself, there are several ways to minimise your energy and capital output further.

A group of metal parts sitting on top of a table

Material Cost

One of the first things to consider when creating a part of any sort is the material you will use. Of course, this varies hugely depending on what the part is for, and there is a vast range of options. So how do you know which is the suitable material for you?

Firstly, consider the importance of the part; for example, if you’re prototyping, it’s best to stick to a cheaper material like ABS or aluminium, whereas a medical implant would require high-quality metal such as surgical steel or titanium. The part's purpose always dictates its material and, therefore, the cost.

Then, consider sourcing the materials – the exact same materials will vary in cost depending on where you get them from – take your time to find the best suppliers for what you need.

{{cta-banner}}

Material Type and Behaviour

Aside from the cost of the material, another thing to consider is the behaviour of each material with certain machining techniques. For example, although plastics are harder than aluminium, aluminium can sometimes be easier to cut because fast cutting of plastics can cause a sub-standard surface result due to rubbing.

Metal content – the more carbon a metal contains, the harder it is to machine, whereas metals with zinc or magnesium can be more machine–friendly.

Here, at Get It Made, we facilitate metal chemical analysis using an Independent 3rd party lab. This means we can check the integrity of your supplier's certificate by checking if the composition truly matches up with it to give you peace of mind – and a UKAS accredited confirmation certificate!

Check out the materials we offer for CNC machining with the pros and cons of each here.

Part Design Impact

As well as the material type, etc, it’s essential to consider the following aspects when designing a part:

  • Hole depth – minimise the use of small deep holes where possible as these are risky to the integrity of your tool ( thin tools are naturally less durable and are more at risk of damage).
  • Wall Thickness – The thinner the wall, the more care is needed – thicker walls have better structural integrity and allow for a more robust design.
  • Internal radii – For this, bigger is better. The smaller the radius, the smaller the tool and the slower the machine. This makes for a less cost-effective project.
  • Cut depth – Similarly to hole depth, deeper pockets can require specialised tools, so, if possible, try to minimise the depth where the design allows.
  • Type of corner – Square internal corners are more costly than round corners, so opt for round as often as possible.
  • Finishing – Not only does this aesthetically finalise your design, but it can also provide protection. At Get It Made, we opt for bead blasting and anodising to give the ultimate finish to your product. While anodising provides a protective layer with a range of colour options, bead blasting essentially removes a thin layer of the material to ‘erase’ machining marks, so your design is blemish-free.

We've put together a comprehensive list of the best things you can do to reduce the cost of your parts, check it out here.

Do Your Research

There is a lot to consider when creating quality products whilst minimising cost, so it can be hard to know where to turn. One of the best tips to ensure you’re investing in the right machine, material and company is to do your research. Look at their portfolio (and if they don’t have one, ask yourself why!) look at what they offer in terms of quality and how open they are in terms of their processes.

To get yourself up to speed, we have put together a comprehensive CNC Machining Guide to get you designing perfect parts CNC machining parts in minutes.

We understand that most people don’t have hours of spare time to spend researching, which is why we offer a 24-hour quotation service. Within 24 hours, our experts will assess your needs and help work out the best options for you and your project, we then take on the project management throughout the process, with regular updates so you can sit back and relax.

A pair of metal latches on a black background

Leave it to our manufacturing specialists

Get a 24 hour, engineer made quote and design review to start your manufacturing project off on the right foot

A man wearing glasses and a white shirt

Get your production-ready quote in 24 hours

All projects are reviewed by real engineers to ensure accuracy, catch mistakes and unlock DFM improvements

Luke Smoothy.
Luke Smoothy
/
Director and Founder

Obsessed with making sure we offer the best service possible in the manufacturing industry. Father to one, and hopefully many more!

Working with Get It Made for all our prototyping was an absolute pleasure. Next to immediate response, fast lead times, often arriving before the stated date. Their attention to detail and customer service were second to none. and all at the most competitive price point that could't be beaten in the U.K.
Ben Coughlan
Ben Coughlan
Director - Sneek Films Ltd
Precision machined metal cube with multiple threaded circular holes
Get It Made are at top of their game when it comes to reliability and quality. We trust Get It Made to deliver parts on time and within tolerance. We can't speak highly enough of their customer service. Get It made are quick to reply to enquiries and keep you well informed throughout the whole process.
Max Blake
Max Blake
Designer - Max Blake Design
Metallic cube with multiple precision-machined cylindrical holes
Get It Made were able to deliver an accurate and quick service delivering a set of high fidelity prototypes expertly finished, ready for user testing. They offered a range of fabrication options and materials to choose from, tailoring the service to our specific budget, timeframe and material requirements. Can't recommend enough.
Finlay Page
Finlay Page
Head of Product - Robotical Ltd
Precision machined metal cube with multiple threaded circular holes
Get It Made have over the years been able to take on from simplest to the most complicated of jobs with ease, providing expert advice, good prices and reliable lead times. No job has been too big or too small, either in size or volume. We would strongly recommend Get It Made; you won't be disappointed!
Stuart Leslie
Stuart Leslie
Director - Bann Engineering
Metallic cube with precise machined holes and threaded openings
We initially started working with Get It Made, as we needed a high quality product developed within a very short lead time. The entire process went very smoothly and we received the products ahead of schedule. We were pleased with the final results and we found working with Luke very easy, as he offered good technical advice.
Tom Butterfield
Tom Butterfield
Designer - Tom Dixon
Precision machined metal cube with multiple threaded circular holes
When we were looking to have parts manufactured, we had tight deadlines with an even tighter budget. Get It Made understood our constraints and worked with us closely to get our parts to a higher standard than we expected. I can not recommend Get It Made enough. They are professional, communicative, and the parts are fantastic.
Ross Embleton
Ross Embleton
Head Of Research And Development - Heliguy
Precision machined metal cube with multiple threaded cylindrical holes
The Get It Made team are very responsive and knowledgeable, fully owning a project throughout, providing superb communication. Transparent pricing structure and rapid quotation turnaround is by far the quickest I've experienced, reducing time to manufacture. Get It Made are a pleasure to work with.
Ollie Masters
Ollie Masters
Lead Process Engineer - Karakuri
Metallic cube with multiple precision-machined cylindrical holes
All testimonials

Bespoke quote in 24 hours

Get It Made is proud to provide a human service. Get a quote and free design review by an experienced engineer to see how we make manufacturing simple.

Cookie Settings
By clicking “Accept”, you agree to the storing of cookies on your device to enhance site navigation, analyse site usage, and assist in our marketing efforts. View our Privacy Policy for more information.