Throw some very fine sawdust into some dry plaster and you will have something that acts like Sculptamold, at considerably less cost. Even coarser sawdust can be used, at the expense of the surface finish.
Herbert That sounds like a low cost alternative. Fortunately, this is a small layout and not much of the commercial stuff is needed. Your idea would be grand for a large layout.
Thanks for your Sculptamold photos. In the last photo of your Post No 39 (where you have placed the tree stumps) did you apply the S-mood over the styrene scraps using a palette knife (or similar) or just pour it over ?
Ultra lightweight sparkle (Red Devil brand) is now finally available in the UK. Have you any experience of how sparkle compares to Sculptamold for the scenic top coat ?
Herb: thanks for suggesting that mix - finding eneough very fine sawdust might be difficult.