🔍 Yes – with the right bit and settings, you can cut aluminum on a CNC router using SpeTool bits. The key is to use **carbide end mills designed for aluminum**, like SpeTool’s single-flute (O-flute) spiral bits which are great for clearing chips and reducing heat in soft metals. Aluminum is softer than steel but it can gum up cutters if you go too slow – so you want a bit that evacuates chips quickly (hence single flute) and you want to avoid generating excess heat. Many users successfully cut 6061 aluminum sheet or plate with SpeTool’s 1-flute upcut end mills. You’ll run the router at a relatively high RPM but also a decent feed rate to prevent dwelling. It’s also important to take shallow depth per pass (to avoid overloading the bit) and ideally use some form of lubricant or at least an air blast to clear chips. In summary: yes, SpeTool bits can cut aluminum – choose a **single or two-flute carbide bit** meant for metal, and dial in conservative feeds and speeds. With a rigid CNC machine and proper setup, you can mill aluminum for brackets, panels, etc. (Attempting it freehand with a handheld router is much more challenging – CNC control is recommended for metals.)

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