There are a couple of ways to find specific speed recommendations for your aluminum and CNC tool combination:

• Cutting Tool Manufacturer Recommendations: Most reputable cutting tool manufacturers provide information on their products, including recommended speed ranges for different materials like aluminum. These recommendations are based on extensive testing and consider the specific tool material and geometry. Check the manufacturer's website or datasheets for your specific tool.
• Machining Speed and Feed Calculators:Several online machining calculators can help you determine speeds and feeds based on your material and tool selection. These calculators often use formulas that consider factors like tool diameter, number of flutes, and material properties. Keep in mind that these calculators provide a starting point, and fine-tuning might be necessary based on your specific application and machine capabilities.

Here are some additional tips for finding the ideal milling speed for your project:

• Start with conservative speeds:It's always better to begin with a slower speed and gradually increase it while monitoring factors like chip formation, tool wear, and surface finish.
• Test and adjust: Running test cuts on scrap material allows you to experiment with different speeds and feeds to find the optimal settings for your specific needs.
• Consider your machine capabilities:Make sure your CNC machine has the power and spindle speed range to achieve the desired cutting speed.

By following these tips and using the resources available, you can determine the most suitable CNC milling speed for your aluminum project, ensuring efficient machining and optimal results.