[Dennis David]

Neil,

My suggestion is to make the viaduct out of wood or some type of poster board and apply a stone vaneer using what's available. Then create the arch stones with individual cut pieces. If you need some pics I may be able to dig some up.

 

[Dennis David]

If it were my project I would use matboard.

 

[Dennis David]

It's the board use to create mats of course.

Bainbridge Matboard

 

[Dennis David]

If you don't go crazy with it being too soggy it should. Just try it first.

 

[Dennis David]

Instead of Plaster why don't you try resin? I have a similer project coming up. Instead of a viaduct I have some town walls to build. I was planning to use Kibri and Faller kits for my masters. I also have a similiar project to do for my toy soldiers where I will be using some other castings for my masters. Since Marlborough Military Models is charging $200 per building front reroducing them for pennies looks quit attractive.