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Swapped from a standard collet to a hydraulic holder on our 40-taper Haas
We were getting chatter on a long 3/8 inch end mill doing deep pockets in 6061. My lead told me to try the HPI hydraulic holder instead of our usual collet chuck. The difference was night and day, the finish went from rough to mirror smooth in one pass. Anyone else have a go-to tool holder for tricky aluminum jobs?
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the_anthony18d agoTop Commenter
What length was that 3/8 end mill you were running? I've had good luck with shrink fit for anything long and skinny in aluminum, but I'm curious if the hydraulic holder is better for really deep reaches.
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the_val17d ago
That one was a 4 inch reach, 6 inch overall length. Shrink fit is great, but for this depth the hydraulic holder really cuts down on the runout at the tip. The dampening helps a lot with chatter on the long flute section too.
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