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Question #: 4704

Question: Can anti-freeze be used as a coolant for your 40W laser tube? I live where winter temperatures are below freezing and my CNC machine is in my unheated garage.

Current Solution

Using Anti-Freeze in the cooling system with either our spindle or our laser tubes will not have any problems and we recommend using a small amount in locations where temperature is freezing or below.
Although we do not recommend using an entire gallon of anti-freeze rather just a small quantity with tap water will be sufficient.

Additional Information:

Additional Information:
All last winter, the temperature was below freezing and sometimes below zero. I used 100% antifreeze for the spindle coolant. Worked great !! All the spindle needs is any type of coolant flowing through it to take the heat away. I use three gallons of antifreeze in a tub with a fish-tank pump to push the antifreeze through. 100% antifreeze works great in cold or hot winter.

Additional Information:
Excellent tip. Thank you for this correction. So it is OK to use antifreeze solely as a cooling method.


Other Possible Solutions to this Question