A power cutting tool fitted with a metal cut off wheel can perform this task just as well as the handheld rotary tool.
Best cut off wheel for aluminum.
Avoid using cutting bits instead of cut off wheels however as they become.
For cutting masonry concrete stone ceramics marble and non ferrous metals.
Goyonder 50 pack 4 5 cutting wheel for metal stainless and steel 4 1 2 x 0 045 x 7 8 inch ultra thin cut off wheel for angle grinders blue 4 6 out of 5 stars 141 23 74 23.
A great secondary application for this abrasive grain and grit would be stainless steel and high tensile alloy for fast burr free cutting use 60 girt.
Cut off wheels for stainless steel for sharp clean cutting action on stainless steel and other alloys cut off wheels for masonry.