So simple & easy to make !! Thank you so much for sharing such a tiny light weight wonderful hybrid FF stove. I also saw a similar capillary action stove whereby instead of the lines (bends on inner can / wick) being parallel to each other, they came to a point (like upside-down V = " ^ ") and made quite a powerful jet (or jets). I also like the fact that you don't have to buy any carbon felt. BTW: I like the comment about making a wider base from one of the other viewers and would also like say that if a wider base needed - you can also use a Vienna Sausage can and do the same thing. VS cans are just slightly larger. Thanks again & hope you all have a safe holiday season. Peace out : -)
Nice test setup and great video. Thanks for the instructions as well! Looks like a good improvement to save weight over the already light carbon felt design. I’ll have to try making one. Only issue with the hoop stoves is they are very sensitive to the width of the bends - get it wrong and yours starts popping like a motor or just doesnt work at all. Does it light from the side or do well in the cold though? (especially setting a cold pot on top) The reason why this design works so well is the integrated pot stand acts as a heat exchanger to boil off more fuel in the wick, as opposed to separated pot stands which pull heat away from the system. So theoretically if you use better heat conducting materials (gold, copper, silver, graphite, diamond) there should be a large improvement in efficiency. To test this I made a micro version of the carbon felt design entirely out of copper just for fun; a 1 1/4 inch endcap and a 3/4 inch junction with tiny cuts in the bottom for wicking. It needs a separate (chicken wire, titanium ones, etc) pot stand and works best when insulated from whatever surface it’s on with a piece of carbon felt underneath. The little guy puts out a jet and burns super clean! It burned so hot I was actually a bit worried the copper would melt but it was fine. At less than half the size, it’s almost as powerful as the carbon felt fancy feast. Unfortunately it only holds like 3/4 of an ounce of fuel and is triple the weight. If you made one the same size, it would be a monster! You should try one, either a mini or bigger size and make a video! I also wanted to try putting the mini size into a fancy feast can cut in half with more carbon felt so it holds more as a sort of triple stacked design that insulated the copper. I may update you on my findings with that later. It also may be interesting to see what cpu heatsinks do when modded with some wicking material to make a stove. Gosh, alcohol stoves are such fun rabbit hole to get into. Anyway, take care and thanks again!
Thanks so much. I did try it out in the cold one time but not very scientifically. It was probably 15 or 20*F and I didn't use a windscreen but it bloomed and boiled just fine. I haven't tried to start it from the side with a pot on top, I've always lit the "well" and then put the pot on. I'm always interested in new alcohol stoves, please do update me if you have any breakthroughs. Thanks for the thoughtful response. Good luck.
Funny we came to the same end. I was looking for ways to reduce the weight of my FF stove. I tried my 6.5oz with revolver chamber like design for capillary (I do mine with a slight diagonal angle, almost looks like rifling of a barrel). But had to use carbon felt to make up the gap. I had some 7.5oz Dew around and tried that with better success but the carbon felt combined with the capillary bends went through too much alcohol. So then I scrapped the felt and went with a 12oz cans capillary bend portion cut like you did. I tried in vain to get it to fit in there by doing more bends and I did get it in there but it didn't perform well. So to bridge the gap between the 7.5oz and 12oz can, I ended up doing the same thing as you. I do one thing slightly different than you for stability with the FF can
What I do is cut the top off with a side cutting can opener, remove a small amount of the FF circumference in the middle. The piece that came from the top is going to become a stabile base so flip it (and reverse it, LOL). The lower portion of the can (aka the bowl) is going to be pressed into the new stabile base, so first expand the base a little (the thin walled part). You can do this how ever you want, I just use another can and slowly work around it until it's expanded just enough to slide the bowl into it. Once there, you can use a piece of wood to carefully press the bowl into the new base. Now trim all your can components that make up the capillary bends, the stand such that you are back to the capillary bend stopping at the top of the bowl and your stand is at 1" higher than the top of the bowl. Lastly get your 4mm of clearance back to your simmer ring with the new lower height. This REALLY adds a lot of stability to this stove. However if you need a bowl with more than 2ounces of fuel, this is NOT the design for you. I typically use 5/8oz, and appreciate the lower height and more stabile base.
Oh, one other thing, since you too use 23oz cans. Definitely make yourself a "snuff can". Use the bottom of a 23oz can cut slightly taller than your stoves height. Then if you are unsure of how much alcohol you need (due to water temp, wind, altitude, etc).. go with 1oz for your two cups. When you hit your bowl, put the snuff can over it to put out the fire and then you can recover the unused alcohol. To make that process safer, I put a slight crease in the top edge of the FF bowl, so that when I pour the access alcohol back into my container, it is focused into a spout like flow (that crease doesn't have to be big to accomplish this)
LOL. I've reached the same solution, combining LittleBitWorkes "groove" capillarity wall inside two plains walls, making a"sandwich" , for fill the space between the (steel) cans used. A kind of "Fancy Fest" stove, but without wick made of cloth (natural or synthetic), works well and allow pours the remain fuel in the fuel bottle.
Tonight I made a stove just like yours. And it works fantastic I boiled a cup of water in less than 6 minutes. It's hard to believe something so small and so light works so efficiently !! Thanks again for sharing your FF hybrid
Awesome! Thanks for taking the time to comment and for sharing your success with us. It's nice to hear some feedback that it works well for other folks too.
Question, does your carbon felt stop the stove from spilling alcohol if it tips over by accident. I want something with a safety measure just in case. Can this stove be made without a cat tin can? How about one just using pop cans only?
No the carbon felt is just a wick, fuel will still spill if the there's more fuel than the wick can hold (which there normally is). You could likely make this from only pop cans if you could find the some with the proper nesting properties. It's easy for me I have a cat, but even if you didn't the cat food is probably cheaper than a can of pop. 😀
I hit the dislike button because you dumped out the beer! LOL I am going to build one for a new friend who needs one. I struggled making my fancy feast with getting the wick material installed. this seems way easier.Thanks for sharing.
So simple & easy to make !! Thank you so much for sharing such a tiny light weight wonderful hybrid FF stove. I also saw a similar capillary action stove whereby instead of the lines (bends on inner can / wick) being parallel to each other, they came to a point (like upside-down V = " ^ ") and made quite a powerful jet (or jets). I also like the fact that you don't have to buy any carbon felt. BTW: I like the comment about making a wider base from one of the other viewers and would also like say that if a wider base needed - you can also use a Vienna Sausage can and do the same thing. VS cans are just slightly larger. Thanks again & hope you all have a safe holiday season. Peace out : -)
Good Job - thanks!
Thank you! 👍
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Nice test setup and great video. Thanks for the instructions as well! Looks like a good improvement to save weight over the already light carbon felt design. I’ll have to try making one. Only issue with the hoop stoves is they are very sensitive to the width of the bends - get it wrong and yours starts popping like a motor or just doesnt work at all. Does it light from the side or do well in the cold though? (especially setting a cold pot on top)
The reason why this design works so well is the integrated pot stand acts as a heat exchanger to boil off more fuel in the wick, as opposed to separated pot stands which pull heat away from the system. So theoretically if you use better heat conducting materials (gold, copper, silver, graphite, diamond) there should be a large improvement in efficiency.
To test this I made a micro version of the carbon felt design entirely out of copper just for fun; a 1 1/4 inch endcap and a 3/4 inch junction with tiny cuts in the bottom for wicking. It needs a separate (chicken wire, titanium ones, etc) pot stand and works best when insulated from whatever surface it’s on with a piece of carbon felt underneath. The little guy puts out a jet and burns super clean! It burned so hot I was actually a bit worried the copper would melt but it was fine. At less than half the size, it’s almost as powerful as the carbon felt fancy feast. Unfortunately it only holds like 3/4 of an ounce of fuel and is triple the weight. If you made one the same size, it would be a monster! You should try one, either a mini or bigger size and make a video!
I also wanted to try putting the mini size into a fancy feast can cut in half with more carbon felt so it holds more as a sort of triple stacked design that insulated the copper. I may update you on my findings with that later. It also may be interesting to see what cpu heatsinks do when modded with some wicking material to make a stove. Gosh, alcohol stoves are such fun rabbit hole to get into. Anyway, take care and thanks again!
Thanks so much. I did try it out in the cold one time but not very scientifically. It was probably 15 or 20*F and I didn't use a windscreen but it bloomed and boiled just fine. I haven't tried to start it from the side with a pot on top, I've always lit the "well" and then put the pot on. I'm always interested in new alcohol stoves, please do update me if you have any breakthroughs. Thanks for the thoughtful response. Good luck.
Funny we came to the same end. I was looking for ways to reduce the weight of my FF stove. I tried my 6.5oz with revolver chamber like design for capillary (I do mine with a slight diagonal angle, almost looks like rifling of a barrel). But had to use carbon felt to make up the gap. I had some 7.5oz Dew around and tried that with better success but the carbon felt combined with the capillary bends went through too much alcohol. So then I scrapped the felt and went with a 12oz cans capillary bend portion cut like you did. I tried in vain to get it to fit in there by doing more bends and I did get it in there but it didn't perform well. So to bridge the gap between the 7.5oz and 12oz can, I ended up doing the same thing as you. I do one thing slightly different than you for stability with the FF can
What I do is cut the top off with a side cutting can opener, remove a small amount of the FF circumference in the middle. The piece that came from the top is going to become a stabile base so flip it (and reverse it, LOL). The lower portion of the can (aka the bowl) is going to be pressed into the new stabile base, so first expand the base a little (the thin walled part). You can do this how ever you want, I just use another can and slowly work around it until it's expanded just enough to slide the bowl into it. Once there, you can use a piece of wood to carefully press the bowl into the new base.
Now trim all your can components that make up the capillary bends, the stand such that you are back to the capillary bend stopping at the top of the bowl and your stand is at 1" higher than the top of the bowl. Lastly get your 4mm of clearance back to your simmer ring with the new lower height.
This REALLY adds a lot of stability to this stove. However if you need a bowl with more than 2ounces of fuel, this is NOT the design for you. I typically use 5/8oz, and appreciate the lower height and more stabile base.
Oh, one other thing, since you too use 23oz cans. Definitely make yourself a "snuff can". Use the bottom of a 23oz can cut slightly taller than your stoves height. Then if you are unsure of how much alcohol you need (due to water temp, wind, altitude, etc).. go with 1oz for your two cups. When you hit your bowl, put the snuff can over it to put out the fire and then you can recover the unused alcohol.
To make that process safer, I put a slight crease in the top edge of the FF bowl, so that when I pour the access alcohol back into my container, it is focused into a spout like flow (that crease doesn't have to be big to accomplish this)
Great minds think alike. Yours sounds like it has some nice improvement, and the snuff can is a great idea too. Thanks for sharing.
LOL. I've reached the same solution, combining LittleBitWorkes "groove" capillarity wall inside two plains walls, making a"sandwich" , for fill the space between the (steel) cans used. A kind of "Fancy Fest" stove, but without wick made of cloth (natural or synthetic), works well and allow pours the remain fuel in the fuel bottle.
Yeah, there's not much to dislike about this type of stove. Thanks for commenting.
Tonight I made a stove just like yours. And it works fantastic I boiled a cup of water in less than 6 minutes. It's hard to believe something so small and so light works so efficiently !! Thanks again for sharing your FF hybrid
I meant to say 2 cups of water not 1 Cup
Awesome! Thanks for taking the time to comment and for sharing your success with us. It's nice to hear some feedback that it works well for other folks too.
Question, does your carbon felt stop the stove from spilling alcohol if it tips over by accident. I want something with a safety measure just in case. Can this stove be made without a cat tin can? How about one just using pop cans only?
No the carbon felt is just a wick, fuel will still spill if the there's more fuel than the wick can hold (which there normally is). You could likely make this from only pop cans if you could find the some with the proper nesting properties. It's easy for me I have a cat, but even if you didn't the cat food is probably cheaper than a can of pop. 😀
I hit the dislike button because you dumped out the beer! LOL I am going to build one for a new friend who needs one. I struggled making my fancy feast with getting the wick material installed. this seems way easier.Thanks for sharing.
LOL! I hope it works well for you.
I can't hear you !!!
Turn up your volume.