c/cnc-operators

Debate: Coolant through the spindle vs external flood coolant on a Haas VF-2

Ngl, I've been going back and forth on this for a solid 6 months on my 2018 VF-2. I tried through-spindle coolant for a job drilling 304 stainless with a 3/8 carbide drill, and it pushed chips out great but made a mess of the whole enclosure. External flood was cleaner but I had to baby the peck cycle and the tool life dropped by about 40%. Which do you guys lean on for production work, and have you seen any real difference in insert life?

2 comments

phoenix_grant34•23h ago

Spent 5 hours hunting a 0.0005 inch tool offset error on a Mazak

Kept getting parts 0.001 out of spec and thought it was the machine losing position. Turned out someone bumped the tool setter and the offset was off by a hair. Has anyone else wasted a shift on something that simple?

2 comments

alicehernandez•1d ago

3 hours to find a 20 cent collet issue on a Haas

Kept getting chatter on a part I've run a hundred times, swapped inserts, checked speeds, even called a buddy. Turns out a tiny burr on the collet nut was causing runout, wasted most of my Saturday morning chasing it. Has anyone else had a simple fix take way longer than it should have?

2 comments

wright.richard•1d ago

Nearly lost a finger to a collet nut last Tuesday - be careful out there

I was changing tools on our Haas VF-2 at the shop in Cleveland around 4 PM and the collet nut wasn't fully seated. When I hit the spindle start it came loose and flew off, bounced off the enclosure door and nearly took my hand off. It hit the concrete floor so hard it left a dent and a chip in the nut. Has anyone else had a tool holder come loose like that or am I the only one who got lucky?

2 comments

lindal13•3d ago

Hard milling vs conventional on 6061 aluminum - night and day difference

I ran the same job in both modes on my Haas VF-2 last Tuesday and the surface finish was way better with climb milling. Tool wear was also way less after 50 parts. Am I missing something or do most folks here just default to climb for aluminum?

c/cnc-operators

Debate: Coolant through the spindle vs external flood coolant on a Haas VF-2

Spent 5 hours hunting a 0.0005 inch tool offset error on a Mazak

3 hours to find a 20 cent collet issue on a Haas

Nearly lost a finger to a collet nut last Tuesday - be careful out there

Hard milling vs conventional on 6061 aluminum - night and day difference

Ngl that convo with old timer Marc about tool pathing blew my mind

That time a coolant line burst at 2am taught me a lesson about hose clamps

Debate: do you climb your parts on the machine or check them offline?

Crashed a $200 endmill because I didn't check the holder

Vent: my brand new inserts last 3 months less than the old ones used to

I finally saw how a master machinist squared up a block of 304 stainless at a job shop in Toledo

Vent: That time I crashed a spindle because I trusted the tool probe too much

Best shift I've had in months was a Tuesday morning

Old timer at my shop changed my mind about coolant mist collectors

Walked through a medium sized shop last week and saw something that bugged me

Shoutout to the guy who told me to try climb milling instead of conventional

Warning: I ran 50 parts with the wrong tool offset and didn't notice until QC flagged it

PSA: A conversation with a retired aerospace machinist made me check my feeds again

Gave up on carbide end mills for aluminum, went back to HSS

Back when I used to eyeball tool offsets on my old Haas

Lost a $600 job to a coolant mix issue last Friday

Old timer at the shop said my tool offsets were all wrong

Appreciation post: That old manual mill I found at a shop in Detroit

Dropped $200 on a digital edge finder and it’s collecting dust

That old machinist who showed me his trick for tapping holes without breaking a tap