fish123
Cast Iron
- Joined
- May 4, 2008
- Location
- Deplorable Conditions, Fl.
Hi,
Have some .750 round bar, need to make .250 and .3125 holes through it. Have a B-port 1J.
Tried plunge mill w/ solid carbide, 4-flute TiN coated center cutting. Dry.
Failed to keep the pressure on, it rubbed and now the bottom of the hole is too hard to cut, shattered the cutter. And the next one.
Looked at the specs for annealing the piece, I don’t have the equipment to put that much heat on it for the required amount of time.
Considering ordering some Fullerton 3412-Fantom 2.0, carbide, 5 flute FC-20 coated.
Would try to cut through the hard spot - is an option I should try?
Or is there a better end mill for 6AL-4V? ( will strive to improve my technique)
On the rest of the holes, should I stop plunge milling, and try a drilled pilot hole first?
Have some M42 cobalt drills that might work.
Would use some Huber’s Hab-cool 318, a high sulphur cutting oil with the drill bits.
Thanks,
Frank
Have some .750 round bar, need to make .250 and .3125 holes through it. Have a B-port 1J.
Tried plunge mill w/ solid carbide, 4-flute TiN coated center cutting. Dry.
Failed to keep the pressure on, it rubbed and now the bottom of the hole is too hard to cut, shattered the cutter. And the next one.
Looked at the specs for annealing the piece, I don’t have the equipment to put that much heat on it for the required amount of time.
Considering ordering some Fullerton 3412-Fantom 2.0, carbide, 5 flute FC-20 coated.
Would try to cut through the hard spot - is an option I should try?
Or is there a better end mill for 6AL-4V? ( will strive to improve my technique)
On the rest of the holes, should I stop plunge milling, and try a drilled pilot hole first?
Have some M42 cobalt drills that might work.
Would use some Huber’s Hab-cool 318, a high sulphur cutting oil with the drill bits.
Thanks,
Frank