Step 1

start of drill

Step 2

2 cuts deep. 1 goes to back of cutting line.

Step 3

If 2 catches "inside" the box, 4 makes an around cut. 3 cuts deep

Step 4

4 throws to 3

Step 5

If 3 catches "outside" the box, 5 goes strike and 6 cuts deep

Step 6

3 goes to throwing line and the drill is back to where it started

Step 7