I am drilling holes in 304 SS 1/4 and one is 1/2 in. both are 1 in deep. I am having trouble with the holes being larger at the start side than the bottom. I have carbibe bits some with coolant holes some without i even bought a precise hole carbibe bit Cant get a a precise hole from top to bottom WHY. get just as good hole with a drug store bit as i do with a 200.00 carbide bit .
I have tried peck drilling, drilling slow, drilling fast, full retract no retract, center drill Drilling, with a Mori Seiki sl-2 tried a bit sleeve and a collet. know i am on center in X What am I doing wrong.
I have tried peck drilling, drilling slow, drilling fast, full retract no retract, center drill Drilling, with a Mori Seiki sl-2 tried a bit sleeve and a collet. know i am on center in X What am I doing wrong.