See our video Heating with 5 Gallon Buckets for a basic primer on rocket stoves and rocket mass heaters.Ī pressure canner, water bath canner or stock pot is really just a metal bucket that you use for cooking. The most popular use of a metal bucket today is as a rocket stove. The easiest way to buy individual metal buckets is on Amazon, where one metal bucket costs about 5 times a plastic one. It’s worth doing your research before using them for “wet” applications. Metal buckets are usually made of stainless steel which makes them highly resistant to rust – although some cheaper metal buckets can rust out quickly if you’re not careful. This means that if a bucket sees a lot of motion and banging around, it’s best to go with plastic which will hold its shape better. Here are the spots where all that plastic ends up.Īlthough metal buckets are more durable, they can dent when abused. Much plastic, after reaching the end of its useful life, ends up clogging up our oceans. The BPA-free movement addresses plastic health concerns, but many health concious people argue that BPA is only one of a multitude of plastic toxins.Īn even larger issue with using plastic is that every piece of plastic we’ve ever manufactured is still with us today, because it doesn’t break down. There is some evidence to suggest that plastic leachate has heath consequences, potentially serious. Some people prefer metal buckets because plastic toxin concerns. By way of comparison, the surface of Venus is just a tad thicker at 1,300 psi. The most pressurized five gallon metal buckets you are likely to come across are actually propane tanks which are normally built to withstand a crushing 960 psi. Benefits of Metal Buckets over PlasticĪ metal bucket can tolerate a great deal more heat before melting, and can withstand more weight and pressure than a plastic bucket. They are easier to locate and quite a bit cheaper than their grown-up five gallon siblings. Smaller metal buckets like the ones pictured are trendy in the organization and crafting communities. Although rocket stoves HAVE been made of plastic, it’s not safe or healthy to breathe in those fumes. A great example is the 5 gallon rocket stove. Some 5 gallon bucket projects or applications, including ones on this site, require a metal bucket. The only exceptions I can find are paints, industrial lubricants and other similar heavy industrial applications. Metal has been replaced with plastic in most applications. Metal 5 gallon buckets are much harder to find than standard plastic ones. That’s when you have to recruit the only material stronger, tougher and more versatile – steel. ![]() Sometimes, a plastic bucket just doesn’t cut the salami.
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