Is it safe to use cinder blocks or red bricks in stoves and ovens?
...ts off a firestorm of incoming Google hits. An old blog post on a “Redneck Rocket Stove” made out of cinder blocks prompted many to suggest that the cinder blocks would explode due to heat. Leon, of the blog Survival Common Sense, does a good job of refuting this notion in a blog post, “Build a brick rocket stove: Is it safe to use concrete blocks?” The short answer is that those concrete blocks are not going to explode. But if you want something...