Cinder Block (CMU) Offset Smoker

For a small fraction the price of a heavy steel smoker, you can setup a large capacity cinder block version. Not only will it be cheaper it will be better insulated. Follow the instructions attached for a very effective, efficient and not bad looking unit.

Review design dimensions.

1. Clear appropriate sized area with offsets as needed.
2. Soften and level dirt or ad layer of sand.

• Cinder Block: 8x8x16 (Qty. 60)
• Cinder Block (1/2): 8x8x8 (Qty. 15)
• Cinder Block (Caps): 8x2x16 (Qty. 16)
• Clay Brick: 4.5x9x1.75 (Qty. 24)

1. Place base layer of cinder blocks and use level to confirm flatness.
2. Alternate seem on each level.
3. Eliminate all air gaps.

1. Build firebox with rotated CMU bricks for air inlet and outlet as shown.

1. With a chisel, break a 1/2 brick into half again so that the chimney has an opening as shown in picture.
2. Stack chimney to 3 blocks high for appropriate air draw.

1. Place top caps on alternating seems from cinder blocks underneath. (Top caps will ad a flat surface for lids to seal better)

Lid Dimensions: 30.5" x 38" (Qty. 2)

1. Cut plywood to dimensions.
2. Procure Heat Shield Insulation (4 ft x 6 ft) and cut to same dimension as plywood.
3. Using a staple gun, apply insulation to bottom side of wood.
4. Fasten two lid pieces with hinges in middle and and handles.

1. Line the inner firebox with clay bricks for extra heat protection for the concrete blocks.

1. Measure off alignment for rebar supports. (3 places)
2. Using a 1/2 inch concrete drill bit, drill holes through only one side of blocks.
3. Insert 25" long, 3/8" rebar.
4. Procure or cut, 3/4" X 13 ga. flattened expanded metal sheet to 22" x 53"
5. Place expanded metal on top of rebar for a cook grate.

1. Procure 29" x 31", 3/16" thick carbon steel plate.
2. Drill and bolt in handles for easier removal (not shown)

3/16 steel plate is necessary for firebox as temperature here will be too extreme for thinner materials

Now you're ready to test it out!

• Use a left over block as a damper for your incoming fire vent. Slide back and forth to adjust heat.
• Leave stack vent open at all times.
• Add another expanded metal grate over the fire-pit if you would like the option to grill over the fire. (Good for tri-tip and chicken)

(This specific pit has about a 20 degree difference from one side to the other....which is actually very impressive.)