My formal training is graphic design, haven’t done much machining but I’m really enjoying it.
I’m try to bore a 4.5” in 1018 to fit a bearing and my finish has sucked and final size has not been accurate.
I’m running an Haas ST20, I’ve got a Sandvik 1” boring bar with CCMT 09 T3 insert. I think I’m reading the numbers correctly, .012 depth cut and 1550 sfm.
I’m drilling out to 1.4 and trying to finish out to about 4” . The bar is squealing like a stuck pig and the finish is terrible.
I’ve got the bar out about 6”, which I’m going to try and move in today. Not sure I’m using the right cutter to take off that much material? Like I said, I’m pretty green so any help is appreciated.
I’m try to bore a 4.5” in 1018 to fit a bearing and my finish has sucked and final size has not been accurate.
I’m running an Haas ST20, I’ve got a Sandvik 1” boring bar with CCMT 09 T3 insert. I think I’m reading the numbers correctly, .012 depth cut and 1550 sfm.
I’m drilling out to 1.4 and trying to finish out to about 4” . The bar is squealing like a stuck pig and the finish is terrible.
I’ve got the bar out about 6”, which I’m going to try and move in today. Not sure I’m using the right cutter to take off that much material? Like I said, I’m pretty green so any help is appreciated.