Hello everyone,

I'm relatively new to CNC machining and have a question regarding surface finishes. I’ve been working on a few parts and, while the dimensions are coming out fine, I’m struggling to achieve a smooth surface finish, especially on aluminum.

I’m using carbide end mills and have tried different feeds and speeds, but the results still seem rough. Could anyone offer some advice on optimizing toolpath strategies, speeds, feeds, or coatings to get a better finish?

I’d appreciate any tips or resources to improve my process.