PSA: That Facebook CNC advice group has some dangerous ideas about feeds and speeds

I was reading a post in a CNC Facebook group where a guy claimed you should run a 1/4 inch endmill at 18,000 RPM with a 0.050 inch chipload on aluminum. I asked him if he'd ever actually tried it, and he said theory says it should work. The math is way off and that spindle would stall or break the tool in 30 seconds. Anyone here ever followed bad internet advice that trashed a part or a tool?

2 comments

2 Comments

tyler614d ago

Honestly, I once spent two hours trying to tram a machine with a bubble level before someone told me those are for walls.

sullivan.finley14d ago

Always used cheap bubble levels for machines myself until I saw a machinist level and realized how wrong I was.