A loose coolant hose was making my spindle sound awful until I spotted it

Was running a batch of aluminum parts on our VF2 and started hearing this nasty humming from the spindle. Thought it was bearing failure for sure, which would mean calling service and losing a day. Took a break, walked around the machine, and noticed one of the main coolant hoses had vibrated loose from its clip and was rubbing against the housing. Tightened the clip back up, and the noise just vanished. Felt like a genius for catching it before it got worse. Such a relief not to have downtime over something so simple. Anyone else have a 'duh' moment like that where a quick look saved your butt?

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