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That moment last Tuesday when I realized my feeds and speeds chart was way off
I was running a 6061 aluminum part on a Haas TM-1 last week and couldn't figure out why the finish looked like garbage. Checked my spindle load and it was barely 20 percent, so I bumped the feed from 20 IPM to 35 IPM on a 3/8 end mill. Night and day difference in surface finish, and I felt dumb for not trying it sooner. Has anyone else had a similar brain fart where you just assumed the old numbers were right?
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wesley_thompson2mo ago
Yeah that chart gets everyone at first.
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anna9832mo ago
That chart is actually missing a few key datapoints. The green line there doesn't account for the seasonal adjustments they made last quarter. Usually throws the whole thing off by about 15 percent.
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nina14727d ago
Wait, hold on... seasonal adjustments? That's a thing? I've been staring at the same chart for years and never once thought about that. Last time I ran 304 stainless I had a similar moment where my feeds felt totally off until I bumped it up way past what the chart said.
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