Grinding with a balanced grinding wheel will make it possible to achieve the required

Dimensional accuracy with surface finish

Positional tolerance surface finish only

Positional tolerance

Pattern of lay

Deburring hole ends

Enlarging the hole to accurate size

Finishing the cored hole

Accommodating socket head screws

Flat chisel

Cross cut chisel

Half-round nose chisel

Web chisel

Insufficient coolant supply

Broken the tip of cutting edge of the tap

Hole size slightly less than the tap drill size

Hole size slightly more than the tap drill size

The clearance angle is too big

The clearance angle is too small

The cutting speed is too low

Feed rate is too high