Yes, there are particular precautions needed when machining this 7075 alloy. Remember you are dealing with a significantly strong material, and in most cases, only carbide tools will do the job cleanly. Lubrication is also necessary for the same reason. Due to the potential heat generation during the machining process, you want to use a coolant for heat dissipation. This will also help keep the tool in good shape for longer. With these precautions, you should machine the 7075 round bars flawlessly.