Hi Guys, I'm sure I was a fairly recent article by Gordon Smith about making safety valves. A search of my magazine collection and Colin Usher's indexes has failed to find it. I thought it was in ME, but it might have been EIM. Was I dreaming? Regards, Andy MODEL ENGINEERING DISCUSSION LIST. To UNSUBSCRIBE from this list, send a blank email to, modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line.