Step 1

Set up two stacks next to eachoter

Step 2

b1 cuts diagonally out of the stack

Step 3

b1 receives disc up the line from r1

Step 4

r1 then cuts diagonally

Step 5

r1 receives the disc back from b1.

Step 6

r1 then dumps to b2. b1 joins back of red stack

Step 7

r1 joins back of stack. r2 cuts diagonally out of stack and the drill repeats from the other side.

Step 8