3D model of terrain4print. The models were repaired and checked for printability.
New piece added to complement the small rect 25mm pieces.
Almost all terrain...Show more pieces look better if you add a base to them. Sure, you can carve out a base from MDF (wear a mask) or cardboard (it will warp) or some kind of plastic (not easy to come by good materials, or expensive). Why not 3D print them?
This is a set of modular terrain bases. Piece together any base you can imagine. Glue it together on top of a thin paper. Then you can texture them, paint them and decorate the terrain much better.
In the photos I have used three other terrain pieces from thingiverse.