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Inside The SOTO Factory | The Origins and Makings of the WindMaster Stove

We went to Japan to learn how SOTO make their trusty WindMaster stove, to climb Mount Fuji, and explore what makes this island so ideal for outdoor lovers.

The trusty camping stove. A backpacking necessity, the gear nerd’s favourite, and your humble right-hand man for baked beans and instant mash out on the trail. Where would we be without it? And crucially, where did it all begin?    

Well, I don’t yet know how all camping stoves came to be, and I won’t bang on about the origins of fire, but I do now know how SOTO’s WindMaster stove came to be. Made in Japan to withstand the harsh Japanese winters, I headed east this summer to learn about SOTO and the legacy of the blue flame. 

The Story

The lore of SOTO begins way back in 1978 when founder Hajime Yamamoto decided to create the Shinfuji burner, a gasoline-fuelled torch lamp that set a new standard in the industrial sector. Around that time, burners took between 2 to 3 minutes to heat up, which just wasn’t quick enough for Japan’s winter temperatures that can drop to -6°C with chilling winds. 

The infamous blue flame.

Hajime Yamamoto’s Shinfuji burner reduced preheating times to a matter of seconds which, in turn, drastically reduced fuel consumption. As word spread, Yamamoto and his team of engineers became known as “Masters of the Blue Flame” and went on to achieve huge success in the industrial field.

Related: An Adventurer’s Guide to Hokkaido

But why stop there? Following these early innovations, the company released the Pocket Torch in 1990, a bite-sized burner that uses disposable lighters as its fuel source. While initially marketed as a crafting tool for the DIY industry, outdoor enthusiasts soon realised its value in igniting fires out on the trail.

Our gear tester checking out SOTO’s WindMaster stove (with the 4Flex pot supports) in Scotland. Photo: Dave MacFarlane.

It was only a matter of time before the team of engineers realised how useful this kind of combustion power would be for outdoor adventurers. Skip to 1992 and SOTO is born, a brand dedicated to innovative and dependable outdoor cooking gear.

Including a variety of outdoor stove options, sturdy cookware and other camping accessories – nowadays SOTO is well-known not just for their reliable flame, but also for their lightweight equipment. Take the WindMaster stove, for example, at just 87g (with the 4Flex pot supports), it’s up there with some of the lightest camping stoves on the market.

The Tokyo 2020 torch.

In recent years, they’ve also become known in the sporting community for developing the burners for the Olympic and Paralympic torches at the Tokyo 2021 Games, as well as the burners and gas canisters for the Paris 2024 Games.

Old Meets New

But what makes a SOTO stove different? Well that’s what I went to find out. Focusing on the WindMaster, the backpacker’s favourite, I went on a SOTO factory tour where they showed us each and every stage of the construction process from raw materials right through to packaging.

What struck me first of all was the quality of the materials, and second of all, the intricacy of the design. Take the shape of the burner head itself: it’s uniquely dish-shaped with a metal lip that surrounds the circumference of the rim. This small but mighty detail helps protect the burner and the electrode from the effects of the wind, giving the stove its very name.

“Precision, we learnt after several attempts, is key.”

The design of the pot supports (4-Flex or TriFlex) also helps the WindMaster battle against the elements by hooking into the burner crown itself. The arms then extend widely outwards and ever so slightly upwards. This keeps your cooking pot as close to the flame as possible, leaving very little room for the wind to surge through. 

A cross-section of the WindMaster stove.

Another unique aspect to SOTO’s WindMaster stove – that us techy gear nerds will enjoy – is the micro regulator valve system. This works by taking the high pressure gas from the gas canister and converting it into a constant, low-pressured, output of gas. This, in turn, prevents the fluctuations in the power of your stove that normally happens when gas canisters get cold.

It’s all very well learning all of the theory behind one of these stoves, but when you get a glimpse behind the scenes at all of the people it takes to theorise and experiment and construct, and well, bring a vision to life; it’s impressive stuff. 

Passing each worker adding, what appears to the untrained eye, as the smallest of details to each and every stove really brings home just how much effort and attention-to-detail goes into building one of these things. 

How Hard Is It To Build A Stove?

And the construction? Well, it’s as intricate as the design itself. We tried our hand at putting together a section of the WindMaster stove and it isn’t as easy as you might think, especially if you’re doing it at speed. 

First we secured the piezo ignition, which is fitted in the burner stem as close to the electrode as possible. The piezo unit and button mechanism is then screwed into the side of the burner near the base, and a small metal lip is folded against the metal for further reinforcement. 

Next we fitted the burner head to the stem. This required a little more delicacy in order to align the burner hole and the stem hole together perfectly. A screw is then passed through both holes with a very level and directional force. Precision, we learnt after several attempts, is key. 

Lastly, we went through the testing process which all SOTO stoves have to pass. Crucially, this ensured that there were no gas leaks throughout the stove and, additionally, that the famous blue flame was ever-present. 

Made in Japan

After getting to know the who, and getting to grips with the how, the final portion of our trip really cemented the why. The Shinfuji burner and the WindMaster were invented to create burners that could withstand the Japanese climate, and where better to understand this climate than on Mount Fuji, Japan’s tallest mountain. 

In order to reach the top without suffering from too much altitude sickness, we had to slow down our pace entirely. Rather than racing to the top, focusing on each individual step was the name of the game here.  

And after many hours of walking through the night, now seated on the windy summit, you remember just why all of these intricate steps are so important. Reaching new heights – like making outdoor stoves – is all about getting the small things just right. 

Step by step.

SOTO is available from the following UK Premier Dealers and other specialist stores: Ellis Brigham, Ultralight Outdoor Gear, Trekitt, Absolute Snow, Taunton Leisure, Outside, Craigdon Mountain Sports @ The Mountain Edge, Tiso , The Climbers Shop and Joe Browns, Rock + Run and Tamarack Outdoors.

For more information about SOTO in the UK, please contact New Heights Distribution who are the exclusive suppliers.

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