Hi Al, Len and Ken Thanks for your tip about No-nails adhesive. I must admit I hadn't thought of using it, perhaps I'm a bit mistrustful of adhesives, although I know it's used quite extensively in interior decoration these days. I've got a tube somewhere, so perhaps now is the time to do some tests! Regards Ron Head 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.