Smoking Meat Forum's user Nick shared this amazing DIY smokehouse. It took him several weeks to complete the whole project.

Materials:

2 x 4 Cedar Wood
Black Stove Pipe
Stove Door
Concrete Blocks
Clay Bricks
Fire Bricks
Fire Clay
Mortar
Bolts
Door Hinges
Door Knob
Bolt Lock
2-1/2 inch Deck Screws
Wood Screws
3 pieces 16 Gauge Steal Plates
Metal Mesh
Tools:

Trowel
Electric Drill
Handsaw
Power Drill/Driver
Level