The Random Thoughts and Senseless Pastimes Blog has an article on building a 3D gameboard for the classic Wiz War game.
Modeling
Albatross Steam Flyer Paper Model
You can download a pdf of the Albatross steam flyer shown above.
Aquarium Supplies As Miniatures Terrain
Over the past few years, I’ve noticed that the variety and quality of aquarium decorations has really improved. When purchasing cat food and litter at the local mega pet store, I often stop in the fish section to take a look at their supplies. I’ve bought some very neat Mayan ruins, a few classical Greek structures, as well as Chinese pagodas for my Boxer Rebellion games. Good stuff, and well worth a look.
Here’s an article on using aquarium supplies as miniatures terrain.
Making 28mm Rail Fences
MacPhee’s Miniature Men Blog has a tutorial on making rail fences for your 25mm 28mm wargames.
Clay Molding Tutorial
The Chicago Terrain Factory has a nice little article on building and casting a clay mold.