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Gary Dunckel
(Zia-Grill-Guy) - MLife

Locale: Boulder
Cat can with felt wick and ti pot stand on 03/05/2013 14:18:47 MST Print View

Hi all. I decided to try my hand at making a cone for my MSR Titan kettle. It turned out pretty much OK. Then I played around with some carbon felt to make a pot stand that would precisely fit the cone. I don't think I actually invented this stove design, thinking I'd seen something similiar once. After using it for awhile, marvelling at its efficiency (especially with the cone),and showing it to others, I thought maybe someone would like to acquire the parts needed to have their very own. Here's what it looks like. A ring of carbon felt lines the cat can, and a strip of .004" titanium foil fits inside the felt. The complete setup with can, felt and titanium is 0.55 Oz. (16 g.)

Assembled cat can stove

This shows the carbon felt liner in place, without the titanium strip:

Felt in can

The three components, unassembled:

Unassembled parts

Here's a fuzzy photo of a BPL Firelite 550 pot sitting atop the stove. The flames are dancing due to no windscreen. This stove seems to work better with a wider pot diameter, where the flames pretty much stay at the bottom of the pot, and not try to creep up the sides. I used this smaller pot for the photo, as the Titan kettle would hide the stove from view.

Fuzzy 550 flames

This shows the flame pattern. Without a pot in place, there will be flames coming from alcohol burning in the center. With pot in place, the flames can only come from alcohol burning at the wick, like a super cat stove.

Stove flame sans pot

This is how I employ the cat can felt stand: I wet the felt with alcohol all around at the top, leaving maybe 20% to pour into the center of the can. I light the center, put the windscreen in place, and let things heat up for 5 seconds or so before setting the pot on the titanium foil stand. The flames will slowly begin to go out through the top of the felt, gradually increasing in intensity until the felt is fully saturated by wicking the extra alcohol from below. With my cone clone, I get consistant boil times of 6-6.5 minutes, and 7-8 minutes with a simple windscreen, with .75 oz. alcohol. Total burn time is about 10 minutes. These times seem to hold true for ambient air temperatures of 25*F to 50*F. Not too bad, in my opinion.

So here's the deal--I have some extra carbon felt and titanium foil. If anyone wants to buy the two pre-cut liner components, and also a titanium base plate to insulate the can from the cold ground, I will send them for $13, which includes shipping. The cat food can is not included, since it's unlikely it would survive the USPS trip without a few dings and creases. If you really, really want me to include an empty Fancy Feast can, I'll buy one, feed the neighbor's cat a treat, clean it and send it along. But you must agree to accept the condition it arrives in. And you will add $1 to the price ($14 total). By the way, if you don't like the taste of cat food, Libby's Potted Meat Food Product comes in the exact same can, but it might not be as tasty, or as nutritious, as Fancy Feast on toast! By the way, the default height of the titanium foil places the pot exactly 1.0" above the rim of the can. If you want, I'll make it a bit taller for you.

For Canadians, and all other international customers, you might be priced out of this market, since I'll have to ask $5 USD extra for the hideous postage surcharge.

If you want to try this setup, shoot me an e-mail--drzooz (at) aol (dot) com

(Edit-- to include the titanium base plate)

Edited by Zia-Grill-Guy on 03/07/2013 09:40:24 MST.

Duane Klinge
(ksc)
Re: Cat can with felt wick and ti pot stand on 03/05/2013 15:42:14 MST Print View

I also made a Cat can wick stove similar to yours called TomCat made with tomato paste can. It extends about 1/2" above cat can top and I cut V notches at bottom of Tomato Can.TomCat stove

Gary Dunckel
(Zia-Grill-Guy) - MLife

Locale: Boulder
TomCat on 03/05/2013 17:22:30 MST Print View

That looks pretty cool, Duane. The V notches are at the bottom? Is that to allow the alcohol to more quickly get to the wicking felt? How thick is your carbon felt?

Duane Klinge
(ksc)
Re: TomCat on 03/05/2013 20:29:25 MST Print View

Hi Gary,

The V notches help with alcohol dispensing and pressurizing. I squirt fuel at top of felt around circumference of can.

Here is link to the wicking felt I use:

http://www.menards.com/main/plumbing/rough-plumbing/soldering/flame-protector/p-1456784-c-8533.htm

All items stay together. I light felt and put pot on top about 10secs later. Fully primes in 1 min. Fairly stable pot support and felt minimizes spill hazard.

Gary Dunckel
(Zia-Grill-Guy) - MLife

Locale: Boulder
Re: TomCat on 03/05/2013 21:51:00 MST Print View

Good stuff, Duane. I made mine with a rim-to-pot space of 1", mainly because that's what I had to do to make them work perfectly with my cones, and also because I think that's the concensus minimal space for normal alcohol burners. Do you think in this case that a 0.5" space is optimal? I'm already convinced that this design is better than anything else I've tried, and tweaking it is the proper geeky thing to do, right? Thanks much for your input.

By the way, the only reason that I've offered to sell these components is because most people don't happen to have any carbon felt and titanium foil lying around in their work room, and I have some scraps available.

Duane Klinge
(ksc)
TomCat on 03/06/2013 11:36:28 MST Print View

I found .5 " to be optimal for this design. It takes about 5 burns to burn off the inner coating on tomato paste can. I noticed a little oxidation on inner upper part of can. Long term will see if that causes issues on longevity. This is probably one of the simplest and functional stoves and cheap to make except for felt.
I found if you use much over 1oz fuel it starts to boil over fuel which could be a safety hazard. I can just about get 3 cups of water to rolling boil with 1oz. It starts to create a number of small bubbles before extinguishing.

Edited by ksc on 03/06/2013 11:37:09 MST.

Gary Dunckel
(Zia-Grill-Guy) - MLife

Locale: Boulder
Felt wick, ti pot stand AND a ti base plate on 03/07/2013 09:45:40 MST Print View

Folks, I had brain-lock and didn't think to add a titanium insulating base plate to the package. I think this is a critical component, so I changed the original post to reflect this. It will add $1 to the kit price, so $13 for the full package (sans cat can).

And a heads up to John and Jeff--your setup will be mailed today, and I threw in a free base plate for you. Hope you enjoy this stove concept.

Anyone else pining for one of these kits?

jeff soliven
(coffee666)

Locale: los angeles
cat stove with fet wick on 03/07/2013 12:43:22 MST Print View

thanks gary! can't wait to try this out.

John McAlpine
(HairlessApe) - M

Locale: PNW
Awesome on 03/07/2013 13:24:47 MST Print View

Thanks....I'm looking forward to seeing how this works out.

Gary Dunckel
(Zia-Grill-Guy) - MLife

Locale: Boulder
Felt wick, pot stand, and base on 03/28/2013 17:17:34 MDT Print View

James, I mailed your kit this afternoon.

Any other takers for these components to make a great cat can stove?

Gary Dunckel
(Zia-Grill-Guy) - MLife

Locale: Boulder
@ Seth--Felt wick, pot stand, and base on the way on 03/29/2013 17:12:49 MDT Print View

They're in the mail, Seth. Thanks again for your purchase.

Nicholas Pappas
(njpca)
Different dimensions? on 03/29/2013 19:05:39 MDT Print View

Hi Gary,
Would you be willing to send a 3in x 14in piece of titanium foil instead? I am looking to make a windscreen/pot support for my mini trangia and would like to spare the expense of buying a larger titanium sheet.
Thanks,
Nick

Gary Dunckel
(Zia-Grill-Guy) - MLife

Locale: Boulder
Different dimensions? on 03/29/2013 21:52:06 MDT Print View

PM sent, Nick--I'm not really flush with titanium foil, to tell you the truth.