I have been looking for Mylar as already mentioned by Webtrekker not much joy here in Ireland, small sheets sold by art shops mainly.
Found idealstencils.co.uk they sell by the roll.
I am heading over to Derby in a few weeks time is there anything else I should take advantage off whilst there ( UK that is ) in relation to the items discussed in this post.
I have found that CIE are in Derby somewhere, not sure if you can walk in off the street.
LB