25 Reflector Oven (Read 91626 times)
DentonDoc
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Reflector Oven
Jan 10th, 2007 at 7:43am
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Since the topic of oven's has come up, I thought I'd add my 2 cents.   (You need to Login or Register to view media files and links) is to a series of pictures taken of a reflector oven design.  I can not specifically say where the design originated, but I got a copy of the plans from QPassage last year.  I crafted a copy from the plans and used it last year on my May Quetico trip.  Over the course of my 14 day trip, I made brownies, cornbread, biscuits, banana nut muffins, and apple cobbler.  After experimenting with the brownies (first item cooked), all other items came out perfect.  The oven cooks hotter than expected.

The construction I used involved 0.025" aluminum sheets (which I acquired from Lowes).  Much of the cutting was accomplished using metal shears. The construction does not involve any fasteners--just tabs in slots.  The slots were cut using a jig saw.  I found the pieces bind together better if you are not too careful cutting the slots and make them slightly irregular rather than perfectly straight.  The food rack, on which the pan sits, is metal skewers which are inserted in equally spaced holes drilled in each side.  

Not shown here, but I also made up a rigid internal rack which can be bolted to the two side pieced.  This makes it possible to remove the bottom panel and use a stove (rather than a fire) as the heat source.  I also used the rack (with metal skewers inserted) for my fire grill when not in use with the reflector oven.

The field test revealed that access to items while cooking is a bit of a problem since you reach over the fire to check and adjust the pan.  To solve this problem, I re-crafted the smaller back panel to allow a "lift-out" section so that the pan and contents can be checked from the rear.  This adaptation has not yet been field tested, but I have every confidence it will work just fine.  (Also not shown, is a small metal thermometer that is use to guage heat.  It was difficult to see from the front, so the back panel adaptation should also assist with getting an accurate reading.)

All oven items are essentially flat and fit into a zip up pouch (design more for papers than an oven) for transport purposes.

dd

« Last Edit: Jan 10th, 2007 at 5:16pm by DentonDoc »  
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flpaddler
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Re: Reflector Oven
Reply #1 - Jan 10th, 2007 at 11:56am
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Nice job DD  Smiley! One question though how much does it weight? I would be interested in building one if it weights less than my Freden which tips the scale at 1lb. 14 oz., I've been continually trying to cut pack weight for this years trip. I do like carrying a reflector oven, which may not make the trip because of weight restraints and opt for the Outback 10 oz. or the bakepacker at 4 oz. My daughter will only be able to carry a 30 to 35 pound pack (1/4 of her body weight) which leaves me carrying the rest single portaging my max is 80 pounds (about 1/3 of my body weight), or I'll need to change my MO and double portage which will slow us down reducing our fishing time Undecided .

flp

  
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DentonDoc
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Re: Reflector Oven
Reply #2 - Jan 10th, 2007 at 5:12pm
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flp -

The parts for the stove break down as follows:  Flat aluminum panels (including the back panel with removable section): 16 oz.
Metal skewers:  3 oz.  So, the carry weight, as pictured (heaviest configuration): 1 lb. 3 oz.  This can be cut by about 2 ounces by reducing the number of skewers (I use 6 ... 4 would suffice) and using the single-piece (non-removable) back panel.

If you really wanted to go crazy reducing weight, you could remove a portion of the left and right panels (e.g., cut circular holes so the panels retain sufficient strength) in the area below the bottom panel.

One of the things I adapted (not for weight savings but more for packing considerations) is round the corners of all non-jointing ends.  This reduces the "puncture/poke" factor when handling/storing.

It would be possible to make this from material that is a bit lighter, but you couldn't go too much lighter and still retain sufficient rigidity.

BTW:  Most of the photos are "post-trip."  When I returned home, I cleaned each of the panels and buffed them with auto polish to return them to a highly reflective finish.  During use, they will pick up a certain amount of residue from being close to the fire.

You will want to test this setup before you go into the field.  I did, but I was still surprised how quickly the oven got to cooking temperature with even a smallish fire.

dd
  
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flpaddler
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Re: Reflector Oven
Reply #3 - Jan 10th, 2007 at 11:14pm
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Thanks DD,

Let me bounce something off you, do you think that's it is feasible to remove the remove the sheet metal that is supporting the unit (legs) and use a log or a rock to support the oven instead, or will it effect the structural integrity of the oven?

flp
  
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solotripper
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Re: Reflector Oven
Reply #4 - Jan 10th, 2007 at 11:48pm
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Before I made my flashing oven, i found this plan and made a reflector oven out of the flashing.
the plan calls for a heavier aluminum, but I just cut the panels 1/2 bigger and crimped over to add ridgity.
It was easy to make and worked well enough to give it a thought??
Don't know exact weight but can't be much over 1 1/4 lbs.

Something to do on saturday afternoon if your a little bored Wink Wink

(You need to Login or Register to view media files and links);   Look on left margin for reflector oven plan.
  
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DentonDoc
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Re: Reflector Oven
Reply #5 - Jan 11th, 2007 at 12:01am
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flpaddler wrote on Jan 10th, 2007 at 11:14pm:
Do you think that's it is feasible to remove the remove the sheet metal that is supporting the unit (legs) and use a log or a rock to support the oven instead, or will it effect the structural integrity of the oven?

flp-

That would be possible.  There is nothing structural about the extra length of the two side panels.  You'd just need to leave many 1/2 inch margin below he bottom panel.  Just keep in mind that the bottom of the reflector is not designed to support any significant weight and is held in place only by "friction joints" (e.g., tabs and slots).

I notice that the plans that solotripper provided uses support rods in the rear to provide elevation/anchoring.  That would also be a potential solution.

dd
  
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flpaddler
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Re: Reflector Oven
Reply #6 - Jan 11th, 2007 at 12:10am
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Brain storming is good. Another idea to put past you all to reduce weight, instead of skewers how about using stainless bicycle spokes, I ve used them in the past for constructing pot supports intergrated into a wind screen for my alcohol stoves. They will support a pot with 1 liter of water with out a problem. If I can get this oven down below a pound, I'll be baking this year.

flp
  
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DentonDoc
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Re: Reflector Oven
Reply #7 - Jan 11th, 2007 at 12:26am
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flpaddler wrote on Jan 11th, 2007 at 12:10am:
Brain storming is good. Another idea to put past you all to reduce weight, instead of skewers how about using stainless bicycle spokes, I ve used them in the past for constructing pot supports intergrated into a wind screen for my alcohol stoves. They will support a pot with 1 liter of water with out a problem. If I can get this oven down below a pound, I'll be baking this year.

Yes.  I thought about suggesting an alternative to the skewers.  However, I've grown to like them, but I may trim them a bit to save a bit of space and weight.  The one advantage I've found with the skewers (at least the one's I've found) is that they are square rather than round and than keeps them from rotating too much.  I certainly wouldn't use the skewers that are made like a cork screw.  Again, the skewers are pretty light ... I typically replace them after each trip (especially if I've used them in the campfire grill) because they are not easy to clean and they tend to get a little bent up.  The ones I buy at a local thrift store are $1.00 for a package of 4.

I think you could easily get down to an overall weight of 1 pound.  One of the things I did was to downsize the original plans just a bit with the aim of making it just a tad larger than the baking pan I would typically take.  I could probably cut the width by another inch and still be good.  I left the vertical dimension alone ... never know when I might want to cook with a taller pan than normal and that could also involve manipulating the reflector angles.

dd
  
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kanoes
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Re: Reflector Oven
Reply #8 - Jan 11th, 2007 at 1:11am
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a bonus for using skewers?  spare tent stakes.   Wink   Jan  

i made a reflector oven too.  hinged top, bottom, and sides.  1/8" ss tubing for the grate (5)...havent used it yet tho.  folded...12"x13"x3/8".  fits a 9" pan.  altho, no rear viewing access.  ill weigh it tomorrow at work and let ya know what she comes in at...if it isnt to embarrassing...lol.  
  
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rbillion
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Re: Reflector Oven
Reply #9 - Jan 22nd, 2007 at 10:53pm
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Where would one get the base plans to the reflector oven discussed in this forum?  There is talk of a QPassage website or link but I don't see one.  Thanks.
  
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