Foam, water, and scraps
Ditto here on the 2" foam insulation on top of plywood. Workd great and you can cut into it with a foan knife or tool. When making your streams and rivers,etc. make sure and seal the sides of your river banks with paint or plaster, and then paint the bottom and side with a ground color,etc. then put in your choice of water pour. I used woodland scenics realistic water and it worked great, just a little expensive, and it shrinks a bit when it dries, so a few pours may be rquired depending on your depth.
When making hills, moutains, etc, just stack up the scrap foam and cover with plaster cloth. Goes on quick, then scenic. Everything glues to the foam pretty well. The foam helps to deaden the sound like cork roadbed does. Good luck, have fun.
Ditto here on the 2" foam insulation on top of plywood. Workd great and you can cut into it with a foan knife or tool. When making your streams and rivers,etc. make sure and seal the sides of your river banks with paint or plaster, and then paint the bottom and side with a ground color,etc. then put in your choice of water pour. I used woodland scenics realistic water and it worked great, just a little expensive, and it shrinks a bit when it dries, so a few pours may be rquired depending on your depth.
When making hills, moutains, etc, just stack up the scrap foam and cover with plaster cloth. Goes on quick, then scenic. Everything glues to the foam pretty well. The foam helps to deaden the sound like cork roadbed does. Good luck, have fun.