For materials I used 1/8" particle board for the base, some scale model drums and cambros, a pack of scrap balsa wood, some sheet styrene, styrene hex rod, styrene tube, sand, and wait for it... a tin can!
tutorial on fasteners.
After that I primed the whole thing black and drybrushed it with a medium grey followed by a drybrush of gun metal and finished off with a mix Secret Weapon Miniatures rust weathering powders and mineral spirits.
- Roll out a sausage of putty (green stuff or milliput will work too)
- Flatten the sausage
- Cut it into sandbag sized rectangles
- Cut a seam into the sides
- Set in place
- Texture with a cloth
Want to make your own? Check out this great video from MiniWar Gaming: