I was away last week on holiday. Didn't bother to unsubscribe as list traffic was pretty light. Came home to find a great debate had broken out. So here's my two penn'orth. I think that anything that might be of interest to model engineers is a valid topic especially if it arises from an "on topic" debate. I have picked up many interesting snippets over the years, many of them arising from O.T. postings. Remember folks, just because a topic is no interest to you doesn't make it of no interest to others. Reading rapidly through recent postings on this subject it is fairly clear that those in favour of liberal O.T. rules generally make the more interesting postings. Barrie Purslow Warrington UK 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.