Had a parts buyer tell me my feeds and speeds were 'old school' last week

I've been running CNC for about 12 years now. This guy maybe has 3 years under his belt. He saw my program and said I was wasting time running conservative numbers. Said he watched a YouTube video where a guy pushed 3x faster through aluminum. I told him I'd rather change inserts every 2 days than every 2 hours. He didn't get it. Then yesterday a spindle bearing on his machine started making noise. Coincidence? Has anyone else had young guys try to tell you your tried and true methods are outdated?

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daniel_walker1mo ago

Well, feeds and speeds are a starting point not a rule, but swapping bearings every couple hours definitely isn't the shortcut he thinks it is.

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the_adam1mo ago

@daniel_walker maybe, but not when you're running production parts all day...

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