Top Do’s and Don’ts for CNC Machines

Top Do’s and Don'ts for CNC Machines

As an experienced manufacturer will tell you, CNC plasma tables are indispensable for modern production processes. Whether you’re producing complex parts or striving for higher production speeds, having well-maintained CNC equipment is crucial for meeting the demands of today’s manufacturing environment. Knowing how to operate and maintain them properly is essential for maximizing their value and longevity.

To help you get the most out of your investment, we’ve put together a comprehensive guide on the do’s and don’ts for CNC machines. By following these essential tips, you can ensure that your machines stay in tip-top condition and continue to meet or exceed the requirements of your manufacturing processes.


The way you set up your CNC plasma cutting system can have a significant impact on its efficiency, accuracy, and longevity.

Do prepare your tools, fixtures, and materials in advance and keep them close to your machines. This will help to reduce setup time and streamline the changeover process. If space is an issue, consider allocating a specific location for the preparation work within your facilities. By doing so, you can ensure that you have everything you need for the job at hand and that your focus remains on the setup process.

Don’t create overly complex setup processes. These can lead to unnecessary downtime and errors, which can be costly in terms of both time and money. Instead, aim to simplify your setup process while still ensuring that the necessary steps are taken to achieve accuracy and efficiency. This may involve investing in a 5-Axis Machining Centre or using specialized fixtures to save costs.


Monitoring and preventing overheating is essential for maintaining optimal performance and minimizing downtime in a manufacturing environment.

Do stay within the recommended operating parameters for your CNC plasma cutter and table to prevent overheating. This includes proper spindle speed, feed rate, and depth of cut settings. Monitor the temperature of the spindle and motors regularly during operation to ensure they are not overheating.

Don’t ignore warning signs of overheating, such as abnormal noises or smells from the machine. These may indicate a problem that needs to be addressed immediately to prevent further damage. Regular maintenance and cleaning of the cooling system, including the air filters and coolant tanks, can help prevent overheating issues.


Do check the coolant frequently to ensure that the right amount and mixture used are suitable for the continuous operation of your machine. Additionally, consult your machine and coolant supplier to recommend a suitable water-based mixture for your machining and manufacturing needs.

Don’t use coolant, which is highly concentrated, as this can cause machine damage and components to rust or corrode, affecting both the health of your operator and the lifespan of your machine.


Do regularly check and use the right recommended lubricant for your CNC machines. Check the manuals for the appropriate oil type, brand, and viscosity. Using the correct lubricant will help your machine operate at maximum performance and can help you maximize your machine’s health and lifespan, particularly for your machine spindle.

Don’t use lubricants that are cheap and not recommended by the machine supplier. It’s essential to check the lubricant’s properties to ensure compatibility with your machine’s internal components, such as seals, hoses, and other parts.

Chucks and Fixtures

Do ensure that you use the correct chuck or fixture for your CNC machine and workpiece. Using the wrong chuck or fixture can lead to poor quality cuts, damage to the machine, and even safety hazards. Also, keep your chucks and fixtures clean and free of debris. This will prevent damage to your workpieces and machine, as well as ensure accurate cuts.

Don’t forget to check your chucks and fixtures for wear and tear regularly. Replace them as needed to ensure that they continue to hold your workpieces securely and accurately. Additionally, avoid tightening your chucks or fixtures to a great extent. This can cause distortion or damage to your workpiece, as well as excessive wear on the chuck or fixture.

You can refer to the manufacturer’s instructions for properly maintaining and lubricating your chucks and fixtures. Proper maintenance and lubrication will ensure that they operate efficiently and accurately for years to come.


Taking care of your CNC machine is crucial to maintain its longevity and functionality. By following the dos and don’ts mentioned in this guide, you can ensure that your machine remains in optimal condition, thus reducing repair costs and increasing your production efficiency.

 Simon Patterson

Simon Patterson

Simon Patterson is the owner and founder of Squickmon's Engineering & Engineering. With over 15 years of fabrication and manufacturing experience, alongside a mechanical engineering degree, he knows exactly what it takes to create a quality product for small fabrication shops as well as large industrial manufacturing companies. He set out to create a company that stands by their products with confidence as well as integrity. His goal was to build a company with a strong foundation, quality product, satisfied customers, and a product that is 100 percent designed and built in the USA.

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