In the welding operations of a bicycle manufacturer, a bike frame has a flow time of about 11.3 hours. The time in the welding operation is spent as follows: 1 hour waiting in front of the cutting machine for the batch to start, 2 hours waiting for the setup of the machine, 1 hour waiting for the other pieces of the batch to go through cutting, 2 minute at the cutting machine, and 3 hours waiting for the transfer to the welding machine. Then, at the welding machine, the unit spends 1 hour waiting in front of the welding machine for the batch to start, 1 hour waiting for the setup of the welding machine, 0.3 hours waiting for the other pieces of the batch to go through welding, 0.7 minute at the welding machine, and 2 hours waiting for the transfer to the next department.