We used Sketch-up to make 3d models of the Batch Rocket Stoves we've been developing. This is an animation of how we build up the stove. The different colored Bricks are made out of different materials. We use 4 different solid materials for bricks:

Yellow Bricks: Fire Bricks

Light grey: Normal concrete which we use to cast certain special sized stones

Darker grey: Normal cement bricks which we cut to size if needed

Dark grey: Special insulating, super strong and fire resistant refractory cement that we use to cast the portbstones and the riser stones. These have to be very resistant to heat.

Please see http://www.batchrocket.pt for more information.