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Unpopular opinion: I spent a full shift chasing a chatter problem that was just a loose vise
I mean, I was running a batch of aluminum brackets on a Haas VF2 last Tuesday, and this awful chatter showed up out of nowhere on the finish pass. I spent like, the first two hours checking everything I could think of. I dialed in the tool offsets again, swapped to a fresh end mill, messed with the feed and speed, even checked the spindle taper for chips. Nothing worked. I was convinced it was something deep in the machine or the program. Finally, after almost six hours, I went back to square one and just put a wrench on the vise handle. It turned another full quarter turn. The whole part was vibrating just enough to ruin the finish. I felt like a total rookie. Has anyone else ever lost that much time to something that simple?
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