Showerthought: Buying cheap end mills vs quality ones

Picked up a 10-pack of $3 end mills off Amazon. First one snapped after 30 seconds on aluminum. Switched to a $18 single from a supplier I trust. Two hundred parts later and it's still cutting clean. Anyone else burn through cheap tooling then do the math on what you actually saved?

2 comments

2 Comments

eric_price18d ago

Man, I've got a little box of shame under my bench labeled "lessons learned" full of those cheapo end mills. My wallet cried more from the wasted time and ruined parts than from buying the good stuff in the first place. How many broken bits did you go through before you wised up?

troyr1218d ago

The real hidden cost of those cheap bits isn't just the broken tools, it's the bad habits you build compensating for them. You start cranking feeds too slow or taking tiny passes, and that muscle memory sticks with you even after you upgrade. Took me maybe a dozen wrecked parts and a blown spindle bearing before I figured out a nice 3-flute carbide was cheaper in the long run than any box of mystery steel.