So there are plenty of brilliant comments, but no practical suggestions for doing a quick and dirty test? Salutations, David L ----- Original Message ----- From: "Nigel Champion (ARTS ANT)" <[log in to unmask]> To: "David Lewiston" <[log in to unmask]> Sent: June 01, 2005 4:35 PM Subject: RE: [ARSCLIST] Gold DVD-Rs Then you need to repeatedly insert and remove the DVD-R from its' case. This is to find how long it takes to separate the two polycarbonate layers of the DVD! Regards Nigel