DIY Wood Gas Stove Instructions

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41 Responses

  1. Excellent article/post/whatever! Can’t get enough of you great illustrations. This may be my weekend project. Thanks!

  2. Christo says:

    Thanks for the inspiration! I made one of these today and tested it out. It works way better than I had anticipated, as most of my DIY projects end comically. I will be taking it out camping in the next week or so.

    Did you do anything to remove the inside coating on the cans? I assumed it would all burn off, but can still see lots on the inside.

    • Derek says:

      Fantastic! I’m glad it worked for you. I didn’t pay attention to when the lining burned out on mine, but it must eventually as there is nothing left on mine.

  3. It’s too bad the BSA doesn’t allow for homemade stoves for use…a troop sure could save a ton of dough, and will learn to build something like this, as it’s not your out-of-the-box kit like offered from National Supply or at school.

    • Bruce says:

      I have never seen anything through BSA that forbids the use of homemade stoves. There is a ban on homemade alcohol stoves, but not wood burning. Where did you find this information, because I was going to make a couple of these for my sons and I…for bsa troop campouts.

  4. Jerry says:

    Does the galvanizing burn off. A guy at the hardware store said that it is poisonous and should not be used. Any ideas?

  5. Derek says:

    The best thing to look for is stainless steel hardware mesh, not galvanized mesh. I will update my post to reflect that.

    The galvanizing _can_ be removed, however. The zinc coating is what is toxic when burned and it can be burned off. If you decide to burn off the zinc, do so in a well-ventillated area, outdoors, and DO NOT breathe in any of the fumes. Granted, the coating is minimal on the mesh, but it is better to play it safe.

    Zinc can be removed by soaking the piece in a mild acid bath. Vinegar works pretty well, but the piece has to be soaked for several hours. I’ve even heard Draino works…but I’ve never tired it.

  6. Jerry says:

    To Scoutmaster Shawn, I am also a scoutmaster. I had not heard about the homemade stoves, but I did hear that BSA does not like the alcohol stoves. I would think that there is very little difference between cooking with an open fire or a wood gas stove. In all acutallity, a woodgas stove pratices LNT more that a fire. Let me know a source for the ban on the stove. I was wanting to have my troop actually build one of these for each scout and then eventually make a hammock. Then have a camping trip where they are limited to these items only to cook and sleep.

    • Derek says:

      Jerry, in short, there is NO ban on wood burning stoves. Making a wood burning stove might be debatable within some groups, for from my reading, it is allowed.

      The policy change came out in April, 2010 regarding the use of chemical fuels and equipment. No mention of wood stoves is mentioned in the policy.

      The policy prohibits certain chemical fuel equipment “that is handcrafted, homemade, modified, or installed beyond the manufacturer’s stated design limitations or use. Examples include alcohol-burning “can” stoves, smudge pots, improperly installed heaters, and propane burners with their regulators removed.” The policy is very specific.

      There are some scouters who feel the only “safe” solution is to use only self-igniting canister stoves, but I disagree. In my own experience, I feel that it is essential to teach safety and proper handling for all the permitted fuel types, including and especially wood burning stoves and fires. Age and experience also play a factor. Younger scouts with less experience should probably start off with canister stoves because it helps build confidence and mastery of techniques. But building and maintaining Leave No Trace campfires is a basic skill for even Tenderfoot scouts.

      It seems clear from the policy that commercially made alcohol stoves are permitted. Alcohol fuel is not banned, but it is on the “not recommended” list in the same report. These “not recommended” fuels include “unleaded gasoline; liquid alcohol fuels, including isopropyl alcohol, denatured ethyl alcohol, and ethanol.”

      From what I have read, the BSA was getting complaints and also observing a rise in injuries related to constructing the popular Pepsi-can alcohol stove. While a cool DIY project, these stoves are difficult to construct and are prone to injury, especially for the youth. My troop used to make the Pepsi-can stove, but we switched to making the cat can stove because it was easier to make (just use a single paper hole punch), was less injury prone, and the stoves performed just as well as anything else.

      Wood burning stoves are allowed, but there is some debate on whether “homemade” wood burning stoves are also prohibited based on this policy. From one perspective, you could argue that this policy is specifically addressing chemical-based stoves and fuels, not wood burning stoves. After all, an empty coffee can makes a fine wood stove and would even be recommended under Leave No Trace recommendations as you indicate. Going deeper, most scouts working on the Metalworking Merit Badge have cut, punched, and scissored metal coffee cans into all kinds of shapes. In fact, if you used the Metalworking Merit Badge as the vehicle, you could make this wood gas stove “legally” :)

      • Bruce says:

        Thank you for the clarification! I asked about this on another post, and the information I have is exactly as you have described on the alcohol stoves. I’m looking forward to trying this out with the troop.

  7. Josh says:

    Hey Derek, great post and instructions, thanks. One note on your design…shouldn’t the inner Progresso can have it’s bottom intact? That way the only air used for combustion would be the preheated air rising through the inner/outer can?

    Thanks

    • Derek says:

      The air flowing up through the Progresso can helps in the combustion, especially when you initially start the stove. The Progresso can is elevated so you can ignite the wood in the stove from the bottom. The mesh bottom also lets the ash filter out of the can. All of these elements are designed to make the stove more effective and efficient.

  8. Josh says:

    Thanks Derek, I definitely trust your experience…can’t wait to make my own. Funny I used to a wood fuel guy, never to consider alcohol…now I am a alcohol guy looking into wood fuel again!

    • Derek says:

      You’re welcome. Take a look at other wood-gas stoves and you’ll see the same venting on the inner chamber–I can’t take credit for inventing it, just making the DIY instructions :)

      It’s great to have options in stoves! I started off as a canister stove guy, then fuel pump (e.g., MSR Whisperlite), then alcohol stoves. The wood stove is great, and not bad at 5 oz (142 g).

  9. Josh says:

    More questions from me! Man for the life of me I cannot figure how you got a Progresso can into the paint can! I may try the pineapple chunks can….but all of the cans I have tried are just too big, talking like a millimeter here…You don’t have pics of the exact cans anymore do ya?

    Thanks man

    • Derek says:

      Josh, I’ll dig around to see if I have any photos of the cans before the build. I may have to build another one to see if the cans have changed since I first put this together.

      • Josh says:

        Hey Derek thanks a bunch, don’t stress too much about it, I think I figured out what the key is…Did you press the inner can into the paint can from the bottom of the paint can? I was not using this method, and only recently watched videos of guys pressing it in from the bottom. I don’t think the cans have changed, but yah that was my first thought, especialy when I saw that you had originally built this a year or more back.

        Thanks again though, I will be trying another build soon!

  10. Benjamin says:

    Where did you get the mesh? Can you post a link?

    • Derek says:

      Most people use hardware wire. I didn’t want to buy a roll so I picked up a gutter screen. It was like $2 from Home Depot. You can get the hardware wire/cloth and all other components at Home Depot for only a few dollars.

  11. Carol says:

    Hi, Derek. Love your site and book. I was wondering how much this stove weighs. Have you checked?

  12. Mike Shelton says:

    I saw the note about avoiding the galvanized mesh and the associated toxins. I noticed the paint cans are coated. Any idea what the lining is/concern about that lining? TNX.

    • Derek says:

      Very good question. Paint cans come lined with different material. I’m not an expert, so you’ll have to check. A cursory look revealed that many cans are lined with “Gray Epoxy Phenolic,” which is toxic! Other cans are lined with tin or gold (gold-lined cans are actually safe for food, according to the FDA; not that you’d eat out of a stove…).

      What I don’t know is whether these linings can be removed to reduce their toxicity. I know some linings do burn off easily. Galvanized metal does not burn off and should be completely avoided.

      My paint can stove has burned out whatever lining it had. I also make sure it is used outdoors in a well-ventillated area.

  13. Mac says:

    Thanks Derek … great project I just finished one with my 14 year old. I cheated and used a bit more of the hardware cloth for the pot stand instead of the chicken can …made it really easy to make the fuel port. I was looking for a good wood stove that was DIY and still light enough to replace my alky that I cannot use with the scouts. My thanks sir and about 5.3 oz finished.

  14. Absolutely love this post. It really gives an outstanding idea that is very helpful for all the people on web.Thanks for sharing.

  15. I just built one of these yesterday according to your plans with only one small variation: instead of cutting out the bottom of the soup can and replacing it with metal mesh, I simply drilled a bunch of holes in the bottom of the soup can. All in all I am *VERY* happy with how the stove turned out. It is easy to light, easy to keep going, and I was able to cook the soup and chicken that were in the cans in about 15 minutes with just a couple handfuls of twigs. I tried a similar design a couple weeks ago that did not work nearly as well. Thank you for the very easy and informative instructions.

  16. Nathan N. says:

    For a full load of twigs, how long of an active burn time are you seeing? I have done something like this using gallon paint can and #10 can, mesh in the bottom, and plenty of holes at base of outer paint can. Really hot burn but too rapid, maybe 10 or so mins to burn all to embers.

    I switched out #10 can with a ceramic vase with a few holes. It is going to need more holes, both for primary and secondary burn. I hope to create a lava rock insert to put above burn jar to heat smoke from burn jar. It has room for improvement at this point.

    • Derek says:

      Wood is a little more difficult to quantify in a simple reply. Different varieties produce different BTUs, depending on conditions. All wood burning stoves require constant fuel to maintain the burn. It is not like an alcohol stove or liquid fuel stove where you can more accurately measure burn time based on a measure of fuel. More factors are involved making it more complex to answer.

      The real advantage of a wood burner is that (hopefully) you have plenty of fuel available to you where you will be using the stove, thus reducing weight carried and minimizing the need to care about how much fuel you are burning–just burn as much or as little as needed to get the job done.

  17. Shanks says:

    Sorry for my naive question. Since I am from India and not familiar with types of cans in your country, I would like to know how did you make the inner can sit inside the outer can without any bottom support? If my understanding is correct, the inner can edge rim sits bang on the outer paint can cover lid carrogation. Right?

    • Derek says:

      The the paint can I used has an inner ring that is the same diameter as the inner can so they fit together nicely. Some people use JB Weld epoxy to glue the two cans together.

  18. Mike Dye says:

    Just out of curiosity, why would you want to remove the bottom of the outer can? It has holes for air intake right? if you leave the bottom on it can catch the ashes which you could bury or pack out. Just a thought.

    • Derek says:

      You need to remove the bottom so you can insert the inner can. Some folks use a side-mounted can opener so they can put the bottom back on.

      • kay Cee says:

        I just cut an “insertion” hole (with diameter slightly smaller than inner can) at the top of the bigger can, cut some flanges into the edges of the insertion hole. Then folded the flanges in/down into the bigger can. Then pushed/knocked the inner can into the hole until the Tim of the inner can meets the edge of the hole. No need to take off the bottom of the bigger can.

        However, with a bottom on the bigger can, it’s hard to remove ash from the gap between the inner can and the bigger can.

  19. optimumrv says:

    This is such a great RV and Camping Hack. Thanks for sharing.

  1. January 25, 2014

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