That $30 end mill I swore by was actually junk - 3 broken parts later
I used to think cheap HSS end mills were fine for aluminum. Bought a 10 pack for $30 on Amazon, figured it was a deal. Broke 3 of them in one afternoon cutting some 6061 parts. Then a guy at the shop let me try his $12 single carbide end mill. It cut clean, no chatter, and is still going after 40 parts. Has anyone else found that spending more on tooling actually saves money in the long run?