03-01-2016, 10:28 AM
I bit the bullet yesterday on a boring bar. A whopping $28. The bit is sharp, acts just like HSS at the mill's maximum speed of 300 RPM. An extra bit is dull, it must put the shine on? Both CCMT I think. Mini. I even ordered another one to cut back into a shorty. Threaders at $132 is too much though, when old trusty works just fine.