Thanks for the info guys. I was aware of the unblinkingeye site and some of the alternatives there but wanted to use the 'modern' process! Having looked at the alternatives processes it appears that many use oxalates which will prove difficult to use. Just had a browse through your site Ralph - truly inspirational work! I might have to pop across for a one-to-one next year - after the house move! Thanks again folks. ============================================================================================================= To unsubscribe from this list, go to www.freelists.org and logon to your account (the same e-mail address and password you set-up when you subscribed,) and unsubscribe from there.