I am going to incorporate one into my new outdoor firepit/grill. “I built my “rocket stove” a while back and absolutely love it. You will need a small bag of “fire clay.” You mix with water just like mortar. “Also, if you are building a “permanent” rocket stove, don’t use regular brick mortar for the fire brick. “If you are just occasionally using a rocket stove, you should be OK with regular brick/block. Not sure on the cost but it would be money well spent. As mentioned below, the yellow fire brick, or chimney brick, is the only brick to use. Over time,they will deteriorate with heat. It would take very intense heat for a concrete block to “explode.” (Think cutting torch temperatures). “Fireplace construction uses firebrick for the firebox and ceramic flue liners to carry the heated air out of your house. Chimneys and fireplaces were our specialty. “I spent many years in masonry construction. It uses materials that could be salvaged from a ruined basement wall. This is another design of a concrete block biomass stove. ![]() Then recently, another chimney guy named Greg Garrison weighed in. So I asked an engineer and chimney guy, and they both said there should be no problems. Several others commented that the concrete could “explode” if heated too much or would crumble after use. I have always been told that you need to use fire bricks for safety.” Many people however, would like to make these for regular or semi regular use. But many different brick materials can be used.įrom Hilltop Homestead: “I understand you are speaking regarding to survival. I built the original stove out of concrete bricks because they were the cheapest at Lowe’s. ![]() The original idea was to spread this low-tech method of boiling water in the aftermath of a disaster. Imitation being the most sincere form of flattery, (he comments ruefully, with a trace of irony) there are several other successful posts, using virtually identical materials and pattern. It has gotten, to date, more than 2,000,000 views. The most popular YouTube video so far showed how to build a rocket stove out of bricks for about $6. This stove made of concrete bricks is an effective method of cooking, using only small pieces of biomass.
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