MWS_DB DRILLS (WSTAR LONG DRILL)

OPERATIONAL GUIDANCE

FLAT FACE DRILLING

Drilling a blind hole

1.Drilling a pilot hole

3.Drill the deep hole

2.Initial cutting with the long type drill

4.Drill retraction

INTERRUPED DRILLING

Drilling and breaking through on irregular faces or angles

1.Spot facing

3.Initial cutting with the long type drill

5.Breaking through

2.Drilling a pilot hole

4.Drill the deep hole

6.Drill retraction