Harry, Do you have details of the Model Engineer article, I'd like to see a copy. Regards, IP Priest & Sons Model Engineers http://www.kinvermes.pwp.blueyonder.co.uk/p1.htm -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.308 / Virus Database: 266.8.2 - Release Date: 25/03/2005 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.