Thursday, September 24, 2009

A Prototype for a One-Piece, Integrated Pot Stand and Windscreen

I hate having to unroll and shape my windscreen when I set up my stove and have been thinking about a solution for a long time. Here's one idea I had for a carefree pot support/windscreen.


Obviously, further experimentation is needed. I need to do a field test and I'd also like to try it out with a regular (0.5 oz.) tea light to see if the narrower flame comes into less contact with the fencing. In the mean time, any ideas for other materials for the skeleton?
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17 comments:

Chris said...
This comment has been removed by the author.
Chris said...

Jason, That coating thst was burning off was the galvanizing on the hardware cloth. When it burns two things happen. First thing is the release of toxic gases, so you should probably do that outside until the burn off is done. Secondly, the galvanizing provides rust protection which was just removed by the heat. Not really too big a deal.

Jason Klass said...

Chris, screw the coating. You won the contest for the wood stove. Did you not see the post? email me your address and I'll send it to you. (cough, cough)

Mungo Says Bah! said...

Hey Jason - I made a pot stand last night using the same galvanized steel mesh. Great idea to integrate the windscreen with the structural stand... how did you adhere/attach the screen foil material to the mesh?
Cheers,
Mungo

Chris said...

I did send it but it must have gotten lost in your inbox. I've resent. Not get that cough checked.

Larry said...

I have a similar setup that's just a rigid aluminum alloy flashing (.006") with four 3/8" deep notches at the bottom and 4 at the top for 1/2 the total circumfrence at each location.


The flashing I used had a coating, so it looks scorched, but otherwise it works fine.

Someday I''ll replace it with stainless or Titanium.

The mesh isn't really necessary for a 600 cup.


Also, I use a homemade wick stove instead of a tea-light, but the principle is the same.

Some old guy said...

I'd use hardware cloth with bigger holes (fewer wires) to cut weight, or snip out some of the wires like a checkerboard. Might want to paint the hardware cloth with heat-resistant paint, too, as it'll rust without the galvanizing. And maybe extend the windscreen top-to-bottom 3/4 of the way around so it'll block wind? I'm guessing the chimney effect would pull in plenty of air at the bottom without leaving the whole thing open, and so you could block wind better.

All that said, I'll probably stick with the separate windscreen as I think guiding the hot air up the sides of the pot helps keep the cold air away from the pot so it doesn't lose heat so fast. Or something. Okay, I just like messing with the windscreen.

velohobo said...

What is it with us? This obsession with setting things on fire…I’m a bit concerned. Anyway, nice design and ‘way to go’ at keeping it simple. I’m currently using a Jim Wood style fire bucket with my Snow Peak 700 (inspired from the link on your site, thanks).

Chris, I’d never thought about what happens when we burn of the galvanized coating (toxic fumes). Good catch. I suppose something similar happen burning off the coating to aluminum flashing.

Great post, Jack

Chris said...

Velohobo, I do a good bit of welding light steal and my favorite material is EMT conduit. It's galvanized too. My dad, the engineer, once explained it to me and ever since I use an angle grinder with a wire brush to strip it off first. It is cool though because at high temp it burns green.

Jason Klass said...

Mungo,
I used a thin strip of aluminum tape over the seam to hold it together.

Jason Klass said...

Some Old Guy,
Good points. I think I will try it with the hardware cloth with the bigger squares. I'm also thinking of making it so the aluminum can slide up and down to control the flow of air.

Jolly Green Giant said...

(Unsolicited 2 cents)

I constantly see people making set-ups which are very similar and I too went through the motions. Then I got the Trail Designs/Titanium Goat Ti-Tri and I just couldn't rationalize continuing to try to make something when the thermal efficiency is so much greater with the Ti-Tri. It's not merely a cone that works with their system which is really what other vendors offered until the Caldera Cone became popular. It is an engineered solution scientifically proven to thermally heat the pot better by taking advantage of every ounce of fuel and heated gas which is what is lost with, well, inefficient homemade versions. The cone is exacting, meaning its size, distance to the pot, number of airports, and everything else about it is designed to provide peak performance where as other options merely serve as a windscreen or a pot stand and come with it absolutely zero science when it comes to doing the job efficiently for which it is needed - cooking. So do homemade versions work? Absolutely, but they simply aren't as efficient which means more fuel, longer burning times, and general inefficiency. If it becomes an argument about weight, then homemade versions will be the winner...at least for a short outing where fuel doesn't need to be so carefully measured. If it is an argument about cost, then homemade options win hands down. If it is an argument about not having a cone for a particular cup or pot, just contact Trail Design and/or Titanium Goat and they'll make one for you.

Jason Klass said...

Jolly Green Giant,
Very good points. I have a tri-ti too and it is an excellent, multi-use system. My only issue is with storage. I really like my windscreen to fit inside my cook pot. But I was considering storing the tri-ti in the hydration sleeve of my pack. How do you store yours?

Sam said...

One thing that is lost is just buying a cone is the fun and pride that comes from using gear in the field that you made yourself. That's why I'm interested to see how Jason's idea actually fares in wind.

Of course, the is always the option of a DIY cone -
http://www.youtube.com/watch?v=VerP7-aiEBw

Jolly Green Giant said...

Good point Sam. I always appreciated the homemade gear aspect from both of you (Jason & Sam) as I agree with the fact that homemade gear is more fun and a LOT more affordable.

In answer to your question about storing the windscreen for the Ti-Tri - YES...it's a bit annoying. Instead of carrying the plastic caddy that comes with it, I made one out of the reflective insulating stuff which I use to retain heat in my mug during colder temperatures. It's the same stuff used by Anti-Gravity Gear which can be purchased at Home Depot/Lowes. It works well and it's nice to have a place to store my spoon, esbit stove, esbits, matches, etc. I put the whole thing inside my cup and that's my little cooking set up. If I want to go lighter, I just use some heavy tin foil and put it all in the cup. I've considered tinkering around with the insulating sleeve I made to make it fit my cup and my windscreen, but I haven't found a way I liked to get it together. Because it's essentially reflective bubblewrap, folding is a little difficult, but the tape that goes with it allows for some flexiblity. So basically, the carrying tube could be a dual use item if I made it work to insulate my cup too (truth be told, I don't find that I need to insulate my cup too often).

JSB said...

Hey,jason
I made a similar stand. You can choose from two types can be fired. Aspects of the CF and pour in alcohol, gives a beautiful burning chimney effect. CF occurs in the central bottom and pour the alcohol into a large fire.

http://www.youtube.com/watch?v=pDWEpMrrjHA

ps
double star stove nice too!

Joemal50 said...

How do you put the fire out if you have left over fuel when you are done cooking?

Joe