How to make cheap Rocky outcrops for Wargames.

If you want some good looking and cheap rocky terrain pieces for your Wargames likes Warhammer 40k, Age of Sigmar, Dystopian wars, Star Wars Legion, the new necromunda ash wastes etc, this is the video for you! No specialised tools are needed and even if you have to buy some of the material yourself, you can knock out a whole board of these for next to no cost.