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CNC Router cutting aluminum part 1.

Updated: Jul 22, 2019

Our opinion on the best way to CNC router Aluminum.

How to cut Aluminum using a CNC router.

There are a number of factors that can affect the cutting of aluminum on a CNC router. What we have found are the 3 most important factors to us.

Factor 1: Speed

Speed and feed cannot be determined by a book or a calculator. Yes there is always a starting point that a manufacture can recommend when using their cutters. What we have found while cutting aluminum is a staring point followed by a simple push of the speed and feed in 5% increments until the chips start to come out in whole pieces and not splinters.

Our ideal starting point for us with a single flute up cut router bit is 45 inches per minute at 18000 RPM's. From this point depending on the aluminum we most of the time end up at 19500 RPM's and 55-60 inches per minute.

As you can see from the video we do not use coolant. and always use a ramp in for at least an inch of the depth of cut.

So much more to talk about, part 2 will be coming soon!


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