Roundwood’s World has an excellent photo illustrated post on how he built a trenches terrain board. It’s something I’ve always wanted to do.
The Roundwood’s World blog has a very nice series on making trench system terrain boards. I’m inspired.
Itty Bitty Battlefields has a post on making 15mm trench systems on the cheap.
Ironhands has a nice photo tutorial on building a trench system for your miniature wargames.
Iron Hands has an illustrated article on making trench systems for your 25mm – 28mm miniature wargames. The principal ingredients are concrete patch, rocks and fiberboard.