Instructables

How to build a woodgas grill and never buy charcoal again

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Picture of How to build a woodgas grill and never buy charcoal again
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A woodgas grill is very efficient is fired up instantly and gives your food the flavor of the wood you use plus the heat is controlled by the simple turn of a knob. It uses wood chunks and very few of them and replaces charcoal so go green and make it taste great to

 
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Step 1: Step one. Build a woodgas stove

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first you need a woodgas stove. they are simple to make however I will not show how to build it because there are several good instructables already here so build one then on to the next step

Step 2: Gather needed parts

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after you have your woodgas stove built you need a flame spreader to make the concentrated fire spread out evenly you can make one from steel plate or an old 55 gallon drum lid. A grill from either an old grill or a replacement grill from a store. Blocks or rocks to hold the assembly above the woodgas stove (how many depends on how you build your stove and how tall you want it). if you want a better grill you will need a lid from an old grill or just buy a cheap grill to convert. A thermometer is a nice add on but not required.

Step 3: Make flame spreader

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I used a metal 55 gallon drum lid (make sure all plastic and rubber are removed) use a cut off wheel and cut slits about 5" long spaced about 1.5" apart starting at the outer most edge. cut slits 5" long and spaced 2 to 3 " apart near the center but not all the way to the very center. then cut some slots at the bottom of those half way between the outer and inner ring

Step 4: Add thermometer and handle to lid

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if you want you can skip this step but if you want to add a handle on top (if there isn't one already) I just zap screw it on then drill a hole and install a thermometer

very nice - are you UK based? I have a design project just starting to make something 'like' this but taking some new ground - perhaps you'd like to be involved?

Awesome work. From what i can see in the pictures it looks like the way you built your woodgas reactor is similar in design to the MIDGE camp stove, is that right?
mbary (author)  tylerwhitworth7 months ago
it's actually my own design of the large woodgas stove but there is a baffle in the bottom and the fan is internal to protect it
mbary (author)  mbary7 months ago
i will definitely try to do that for you
AlG2 mbary2 months ago

I would love to know more about your design too. I tried searching for plans similar to yours, but nothing that I was crazy about. Thanks, Al

I'd love to know more about your design.

Bowtie41 mbary7 months ago

Since your is your own design,please go ahead and post it too,as I haven't built a stove yet,and might as well have the whole schebang match.

Very cool. so is the fan directly beneath the pyrolysis/reaction chamber or vented in?
mbary (author)  tylerwhitworth7 months ago
the reaction chamber is a 4 1/2 quart and a 6 1/2 quart stainless catering pots. the inner pot has holes every centimeter on top and every inch on the bottom. the larger pot has a 3" square hole in the bottom. 4 large bolts hold both together without the need for welding. the base is 8" stove pipe with 8" angle flanges one on the bottom and two on top to hold the pot in place. there is a round piece of tin held just under the reactor assembly with a hole in it and it is held with angle brackets. the fan is mounted on the round piece. then a vent hole is cut into the base for airflow. i built it this way so it would stand up taller to a more usable height
That sounds awesome. I plan to make a woodgas stove for my house this winter I like the idea of putting a fan in it. Thanks
mbary (author)  tylerwhitworth7 months ago
i originally built this for home heating. it had a top piece that connected to a flu pipe and a second pipe around that with a fan for a heat exchanger. it worked well but didn't have enough btu for my entire cabin
vladivastok6 months ago

QUESTION: IS THIS TECHNICLY A GASINATOR ? THANK'S [VLAD[

ibwebb7 months ago

Awesome ideas...I hate to be picky about stuff, but I would really recommend not to put the handle over the vent though or you will end up with a REALLY hot handle that might still burn with a heat insulated glove. Just a suggestion to move it to the side or make higher up so that they heat disapates more.

mbary (author)  ibwebb7 months ago
thanks for pointing that out. i was in a hurry when i built it and didn't think about handle placement
Alienjones7 months ago

Thank you!

Australian Electricity prices have gone through the roof lately so I've been looking for info on how our grandparents made gas generators for their cars. This is exactly what I needed to see. Now I figure I'll be able to make my own gas generator and hook it into a portable sine wave generator to lower the cost of our Electricity. I'll post my adventures making it and how well it works. Pity we don't have a waterfall nearby.

jo_c_fus7 months ago

Couldn't find any woodgas stoves on Instructables.

I have made a couple of these: Check out this awesome Instructable. MIDGE gasifier campstove http://www.instructables.com/id/EQ1Y43WH87VNOLH/?lang=en they work well, and would be good for experimenting, but there are tons of plans on instructables for various woodgas reactors/stoves
mbary (author)  jo_c_fus7 months ago
look up (large portable wood gasifier stove)
sleepinggiant7 months ago

The world needs more grills like this! Last summer I built a "rocket stove" design based wood gas bbq grill very similar to what you have here and it worked FANTASTIC. So I'm thrilled to see others experimenting this direction. This stove fires up very quickly as advertised, so I highly encourage people to build it! The major downside I discovered with this design is that the fat drippings coming from the pork chops or whatever would fall down onto the heat spreading materials below and they would start to cook very quickly and smoke terribly or catch fire, ruining the food I was cooking. So, my new stove design, which I will try to post somewhere, uses a solid flat grill that catches all drippings into a stainless bowl a the side. It does, disappointingly, lose a bit of the wood grill flavor, but it looks so much nicer, and cleans and cooks so well. I really hope to make an Instructable for it.

akwhitacre7 months ago

Sorry, had to giggle. "How to build a woodgas grill..." "Step 1: Build a woodgas grill."

Technically, this instructable is for how to build a woodgas GRILL. The first step is to have already have a woodgas STOVE. I guess it could be reworded into "how to turn a woodgas stove into a woodgas grill" but that's just too wordy :P

mbary (author)  akwhitacre7 months ago
i know but i would just be showing how to build one part that tons of people have already shown
mbary (author) 7 months ago
i will be posting pictures of it in use soon and realized i have a bunch of extra parts from another experiment to make a rotisserie attachment. the woodgas stove and the rotisserie will all work off of 12vdc and only use 2 watts
mbary (author) 7 months ago
i intended on posting pictures of it in use. a winter storm blew in right in the middle of completion so there is summer squash and potatoes waiting for it in the fridge