hi everyone...i have been working at automative company as a mechanical engineer at maintinence depertman about two months ago...thats my first job and i have no experience about cnc machines...and unhappily my company want 6 sigma project about telescopic covers...damns...:/ so i need the identfy the reasons of telescopic covers problems...if you have any idea and will write here to help me,this new enginer wiil be really gratefull to you...