The boards are fed into the front end of the machine and an electric light reads the end of the board, then the wood is returned to you. Before it is fed back another head with a knife slides into place and it shaves off the face of the board a second time then returned back to the operator again. In other words it cuts both ways. Both machines are heavy duty and in pristine condition. We have all the tooling that originally came with the machines. We are asking for $15,000 for both. Gene Agress, CEO, Berkeley Mills.