Share Content Published April 6, 2009 ©Si Barber. Moral rights asserted. A chuck of a computer controlled lathe cnc complicated computer control cutter dust employment factory factory mentoring mentee fast hard hole intricate metal numerical plate Si Barber Photo Archive Si Barber Photo Archive mail@sibarber.co.uk sibarberphoto program programme section shape sheet sheetmetal silver spark stainless steel technology tooled chuck tool metal metalwork sheet patterns pattern extract gloves protection protective protect cut cutting tradesman work worker workers working laser