Answer
Jan 13, 2026 - 11:19 AM
A 3-flute end mill is generally better for aluminum than a 2-flute because it offers less chatter and good balance between chip clearance and strength, allowing for faster cutting and smoother finishes.The 2-flute end mill provides larger chip space, which can be beneficial when cutting very soft or gummy aluminum. Ultimately, both work well, but 3-flute end mills are often preferred for their cleaner more efficient cutting and the finish quality of the cut.
