I am over carrying heavy stoves – and fuel. This one will do me. I will produce a version in titanium which will weigh about half what this one does in stainless steel, so under 20 grams! And no fuel to carry. Good enough?
This is an update of an aluminium flashing stove I made some time ago as a prototype. The new stove used less than half of a 100 mm x 1 metre roll of .1mm SS foil I bought on eBay for A$12 delivered (Aug 2020) – so an approximate cost of $6. It took about ten minutes at the outside to make using simple hand tools (and an electric drill). It should give me good service for several years.
If you haven’t any stainless steel foil, why not try utilising a large can such as an empty olive oil container (Della has just given me one). It will make two of these for free! If you oil such ‘tinplate’ stoves between use they will give years of service.
Here it is set up for alcohol burning with one of Tinny’s Gnomes inside.
You can see I made it slightly larger than the pot so I would not need any other air inlet or outlet than the fire door and open top opening.
I decided to go with a ‘monkey grip’ join which is prevented from coming open by four SS pop rivets as shown. It just slides together. If you do not have a pop riveting tool you could go with the ‘piano hinge’ join I used in the original stove.
You need to allow approx 1 1/2-2″ (45mm) extra length (on top of the diameter of your pot) so the flame and smoke can exit the top and another 1/2″ (12mm) each end for the ‘monkey grip’. It is that simple!
The opening is just a hexagon with approx 3 cm sides and about 1 cm up from the bottom. Just get a hold of a used tin can (eg an olive oil can) or buy some SS or Titanium foil and do some cutting an drilling. It is a pretty simple little stove. Lay a couple of pegs across the tops to assess where to drill the holes for pot support. Drill the holes for the three anchoring pegs more or less equally around the edge.
A piece of flashing will prevent the ground from being scorched and provide a dry surface on which to light your fire. I will trim this piece into a circle to fit. In fact I may cut a circle of SS foil. BTW: I have since done this. The .1mm thick SS foil disc weighs 4 grams. Titanium would weigh 2, so the stove plus floor in titanium would weigh approx 20 grams – and cost less than $5!
It was very easy to light and was soon burning away merrily. (Remember this trick) I have it pinned down with 3 of Terra Nova’s 1 gram Skewer Stakes. Bicycle spokes would work well for this purpose (likewise the pot supports, and for DIY ultralight tent stakes in general). There are plenty in waste bins.
It took only about 3 minutes to boil a cup of water.
A nice clean flame. I was surprised how much warmth was produced by such a small fire. It would be quite pleasant and relatively safe at the door of your tent on a cold night. I will be making an updated version later for heating a tent and producing electricity. Watch this space.
It takes up very little space in my billy. Plenty of room for other things. Space and weight are both important when backpacking/hunting.
Inside the fire door. I cut the door into a hexagon shape so I could fold the edges over like this to reinforce them. I wanted the ‘V’ at the bottom so the wood would stack up in a circular fashion for better burning and so that the stove would still roll up – which would be more difficult if the opening was flat at the bottom.
You can almost feel the warmth. Those are Tito’s 5.5 gram Titanium tent pegs from Aliexpress.
BTW: I will be making a carbon fibre cosy for it (when the fire resistant thread comes) which will save me about 40% of my alcohol fuel. I will sew small glass beads on the inside of the cosy to hold it just out from the sides of the pot so warmth can pass up the pot but not into the air. It will be easier to make than my previous conical one.
PS: I think the best thing about this stove is that it uses just a handful of forest waste to cook your meal. A couple of hundred grams (at most) of twigs. Such material is not habitat (such as you might consider the large logs you might collect for a campfire to be). If you light it on a circle of flashing or SS foil the tiny residue of ash (about two matchbox fulls) can simply be puffed away with a couple of sharp breaths, or scattered discreetly around.
It really is an environmentally friendly (no fossil fuels, minimum resources used) and ‘leave no trace’ mode of cooking. You just have to be careful not to start a forest fire (the floor helps with that) and ensure that it is completely out before you scatter the ash. A couple of minutes at most waiting – while you eat your meal of enjoy your cuppa.
You can buy the titanium foil to make the 20 gram one from Aliexpress for A$3.87 delivered.
Brain Freeze Moment: I made the stove with an undoable join so it could fit in the billy. I now realise that it would fit just as well (and keep things cleaner) on the outside of the billy if I just joined the ends with pop rivets! If I made it out of .2 mm titanium it would weight the same as it does now, be stronger and resist crinkling better in this situation too.