Build a 2 in 1 outdoor wood stove with cement and old Styrofoam

Build a 2 in 1 outdoor wood stove with cement and old Styrofoam - Simple ideas for wood stoves

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DIY cement IDEAS

2 жыл бұрын

Build a 2 in 1 outdoor wood stove with cement and old Styrofoam - Simple ideas for wood stoves

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@centimarkswesterngroupmark2961 2 жыл бұрын

this looks cool, although fire will destroy plain concrete quite quickly. While concrete isn't flammable itself, the heat from a fire will make it basically fall apart. That is why fireplaces use something called "firebrick." You can use additives to make it stand up to fire better, like silica.

@spex357 2 жыл бұрын

When the concrete is heated, the cement inside becomes dehydrated, losing some of its water as vapor. That water vapor begins moving away from the source of the heat, but becomes trapped inside the structure of the concrete. Hence when these explode they do from the inside out, which luckily saves your food but could leave you with a chunk embedded in your eye.

@guillermoflores7030 2 жыл бұрын

Wouldn't the cement crack in the heat? 🤔 I think so.

@jnc07res Жыл бұрын

I've constructed a few simple cement grills, largely from the ideas of these KZbin videos. And it's super fun. Couple points of advice before you get started: a) don't improvise materials too much. If you don't have enough 'Styrofoam' just wait until you do, because it's perfect. Scraps of wood wrapped in 'cling wrap' also work well and release without a fuss. b) Pure cement flows well but doesn't offer a lot of strength with regard to heat cycles and resistance to cracking. So, insert steel reinforcing rod wherever and whenever possible. I like to use old wire clothes hangers, straightened out with a pair of pliers.... nipped/re-angled/fitted, especially around corners. c) Voids. Lifting and dropping short vertical distances helps get the bubbles out when trying to fill those low corners. Don't drop it too high though! Just a couple inches is good enough. Once its more than half poured, it may be too heavy for even a 'gentle drop' , for fear of splitting/distorting your form/mold. Just slap the sides of it, or perhaps apply the handle end of palm sander around the outside of the form to vibrate/compact any air bubbles. Do make sure to pour your mix there first, to find all the nooks. d) perhaps most important, let the whole thing cure at least 2 or 3 days before dismantling the form. Those lower corners, especially if you formed some 'legs or feet', these take the longest to set up and properly harden. There's nothing worse than going through the whole process only to become impatient and find that the feet either broke off or partially crumbled and need more point work or patching just to be functional, let only look pleasing. Also, I like to add some perlite to the mix to lower the density... these grills can get quite heavy if constructed purely of cement/sand/gravel. And, if you have't mixed cement in a while (or ever) its a good idea to make a small test batch of your 'mix' ahead of time, enough to pour into a large plastic drinking cup if nothing else, just to see how it cures, especially if adding sand/gravels/perlite, etc.