You may of heard this one before but if you havnt here it goes.Chose a nice sunny day.Things you need:
Plaster,
sand,
PVA (white glue) and
water.
1.Get a old container and mix sand and the plaster together (doesnt matter how much you use).
2.add little bit of water
3.add PVA glue and mix.
4.spread on to wooden board.

NOTE: the thicker you put on the base the longer it takes to dry.

Ola Matt

That is indeed a very easy way to make Dioramabases. This is a technique I have used for a lot of dio`s and it works very fine and fast too.

Thanks for posting it.