We built ours out of cinder block and metal. Although you need to keep in mind that if you do not use fire block, you will be replacing blocks often. We stacked the blocks up four high and two deep. You can build your fire pit as large as you like but we made ours 6 foot by 4 foot, with a side fire pit that was 3 foot by 3 foot. I went to the local steel company and picked up a 8 foot by 6 foot sheet of heavy gauge mesh to lay over the top of the pit. Then my husband and his friend built a box lid using plates of steel. You have to manually flip your hog this way but it gets the job done.