After reading Outamatches post and link for a Flashing Oven, I decided to build one.
I had flashing in garage and some "ideas" of my own. One of the "drawbacks" in our minds was the inability to check on the baking items without removing the top pie pan?? I believe my solution solves that problem?

The original plans show a piece of aluminum flashing about 12" high and cut to the circumference of 9" pie pan plus a few inches overlap. There was 3 holes drilled thru flashing about half-way up to form baking rack.
These were made of small threaded rod. The flashing "tube" just basically set in one pie pan/w the other as the cap. A small hole was drilled in top pan with a mini hi-temp thermometer inserted.

I didn't have threaded rods and decided to go a different route? I thought steel rods would eventually start to rust, so I used heavy galvanized wire, the kind you hang suspended ceilings with. I cut 4 rods about 11"long and bent a 1" L on one end like a tent stake. One rod go's thru the bottom pie plate across the center thru flashing tube. I wanted a one piece unit to move around. The other 3 rods go across mid-way acting as the baking rack.
Because I didn't opt for threaded rod, I needed to find a way to retain tubular shape on top of oven. I chose to drill a 1/4" hole a few inches down from top, were the flashing overlaps and used a 1/4"x 1/2" stainless bolt and stainless wing nut to secure.
I found a mini high temp thermometer at do-it-yourself appliance repair shop. About the size of a quarter and reads to 550 F. It cost about $8.
While shopping for a top pie plate, I had what I think is a great idea?? I saw a 9" pie pan made out of silicone? The light bulb went on!! I could save weight and also address the problem of checking on baking item. I bought a 7" silicone trivet as well. I used a razor knife and cut out a 3" diameter circle in silicone pie pan and then laid trivet equal distance over bottom of pan. I then used my leather hole punch and put 1 hole thru trivet and baking pan, slightly smaller than thermometer. The thermometer acts as a pin and allows you to peel back trivet and view baking items without losing to much heat. Silicone remains fairly cool, so you can do it bare handed.
My first attempt at baking on my gas range with a diffuser was only partially successful because bottom was well done but top was barely done??
I quickly realized that I needed a baking pan smaller than the one I used because the heat wasn't circulating evenly! I went to smaller pan and it worked like a charm. I used it on my Peak 1 with equal success.
I made a wire bail for baking pan so it would be easy to remove. I also made a wire rack for baking pan so I can bake fish and let the oil drain off (thinking laker).
All in all, I think its a worthy alternative to reflector oven, with added bonus's of being usable on stove top and being unaffected by the rain.
Will give a "real" world report after my May trip??
It was fun to make and might be worth a look??

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Sorry about that :-[ :-[

Solotripper, That looks neat. I have never seen a silicone pie pan. I does take some getting use to cooking times so your idea would work great. I did the same thing as you by putting bolts in the side to hold the flashing together. I have only cooked on it over a stove but I would like to try it over a cooking fire. BLUEBERRY MUFFINS FOREVER!!!

I don't see why it wouldn't work just as well over a REAL fire as well??
I'll give a field report after my May trip but I think it should be a winner??
I'll just use over hot coals, so it doesn't get to sooted up.
With the cool touch silicone top, I think you can just let it reach "temp" while you mix your ingredients and then quickly remove lid and insert baking pan like in conventional oven.
Anyway I was looking for good use for the extra flashing ;) ;)

You should mass produce them and get it on a tv shopping show. $14.95 plus $12.95 SH, and if you act now......

I would be happy if it turned out to be a violable alternative to other qjers who don't have a oven or don't like using a reflector oven?
I have to add a warning about my choice of galvanized wire for rack!!
I owe the heads up to Screamingwindigo, who brought it to my attention that galvanized metal gives off toxic fumes when welded or super heated!!
I knew this because I used to weld quite a bit when I worked construction but I forgot not everyone would know this??
I pre-heated oven on kitchen stove(no wife to irritate)and ran range hood to vent fumes.
After about 20 minuted smell was gone and I made a test batch of cookies.
I believe the galvanized coating on the wire was eliminated but will keep a wary eye in-case I'm wrong about it??
It would be no problem to use aluminum rod or even the original threaded rod if you wished.
I went with what I had handy, so be aware of the potential hazard with using that wire?

The threaded rod are cadium plated so they probably give off something bad also. I don't think you will get it hot enough to burn it off just using it as a stove. But I am no expert. I would say get it as hot as you can and hope it burns off before you cook with it.

you might be right about not burning off in oven :-? :-?
I didn't notice any funny taste or odor in the cookies I baked but maybe I'll just play it safe and get some aluminum rod and not have to wonder about it ;D ;D

The reason he used threaded rod was to keep them from moving around as the threads fit into the flashing and keep them from falling out. Something else you might use that are made for cooking but might be a little heavier are skeweers like they use to serve grilled shrimp in resturants. They are chrome plated and about the right length. You could take a file and file a groove in them so as to set on the flashing and not move around.

After reading dd post of skewers for his reflector oven, i thought i have a whole package of them in kitchen drawer unopened!!
i still think i'll keep bolt/wingnut, weighs nothing and gives a little more stability to cylinder.
But the skewres would make good rack material.
its amazing how many good ideas are floating around here and how many people are willing to share them ;D ;D

Ok one more idea. If you want to reduce it by a few grams replace the bolt and wing nut with those brass pin things that they use to put papers together. They are split and you just put them in the hole and spread them out.
PS. The bolt works better.

I made three of the Flash Ovens this past weekend, one for my brother and two for me.  They weigh 12 oz (each) including skewers, heat diffuser, and oven thermometer.  Home Depot has various height rolls of aluminum flashing from 10" to 20".  Betty Crocker has some muffin mixes in a bag that cost $1 and all you add is 1/2C water.  I made the lemon poppyseed (small) cake from the mix and it turned out great.  Easy to make, cheap, and works good.

I have been looking at the Outback oven and they use an insulating material to help hold the heat in. One thing about this flashing oven is it does take a while to cook things and I think it is because of heat loss.
I have a friend that is a fire chief for a small town fire dept. They are getting new turn out gear (fire proof jackets) and I asked if I could have one of the old ones. I was thinking about tearing it apart and making a cover for the oven. I would have to find some Nomax thread to sew it and it will probably be heavier that I want but if I get it done I will let you know if it works.

OT,
that's a interesting idea, sort of a "cozie" for the flashing oven??
ONE thing I found, with the SILICONE top, I don't think the heat loss is as great as a metal pan because the SILICONE stays cool enough to touch??

I made a jello mold oven with suggestions from "that other site" and added silicone to insulate the outside of it.  IMO, it made a big difference, especially in colder campouts.  You can buy a silicone baking sheet(s) set at Bed bath & beyond, or any where, that's just where I got mine, cut to fit.  You can use a rubber band on the outside of the silicone to keep in place, or "stitch" it together with wire.  Just push the wire thru or use needle to create holes.  It stays in place pretty well by itself, if sized right.  It is not melt proof thou, as I found out, and creates quite the mess if it gets too hot.   I think I posted pictures on here, can't remember thread name.

Can't find pictures if they were posted here.  Anyway, if you are member or want to look at, BWCA.com, search under "jello mold oven" words and it will pop up.  

Very neato keano ideas...I have some ideas that would help me get to that crusty bread...after seeing this. Thanks for sharing!