It is not difficult to cut brass pipes with a miter designed to cut non-ferrous metal.
You can identify whether your saw is suitable for cutting non-ferrous metal by checking the label. I would also recommend that you read the safety precautions before you proceed to cut the pipe.
It is also a good idea to put on safety glasses and other safety clothing to protect yourself from unforeseen accidents.
More importantly, ensure that the motor housing is covered to prevent it from collecting brass chips. Cover it with a piece of cloth to protect the bearings and windings.
I would also advise that you use a sturdy vise for this type of job, when cutting brass.
After that, make cuts that are close to minimize vibrations. In case the tube is too thin, you can use a piece of wood to add extra support.
As a result, you will reduce the risk of the blade getting stuck on the pipe. If the saw gets stuck, it will destroy the brass pipe.
Before you switch on the power, ensure the saw’s guard is in good condition. And also, it is in the right position. Additionally, you can adjust the miter locks to make sure that your cuts will be accurate.
When working, ensure that you maintain the pressure consistently as you cut the pipe. After you have completed cutting, hold the miter saw down and release the power.
I would also recommend that you hold the tool still until the blade has stopped moving completely. Later you can return it to the upright position.