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/diy/ - Do It Yourself


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File: 3 KB, 204x127, images (1).jpg [View same] [iqdb] [saucenao] [google]
615738 No.615738 [Reply] [Original]

Alright DIY, I have a project and I figured you guys could help. I have to build a solar hot dog cooker that can cook a hot dog in under twenty minutes.

It has to use a parabolic shape and cannot be constructed from pre existing parabolas.

I probably could have done this myself, but I figured I would ask around here first to see if anyone has a really good design.

Thanks in advance, guys

>> No.615741

It'll have to be really big to cook half a ton of imitation crab meat

>> No.615756

>>615741
I hope it's GENUINE imitation crab meat. Don't settle for anything less.

>> No.615758

https://www.youtube.com/watch?v=f_zKk03CJKU
water + plastic sheet

>> No.615759

>>615738
>It has to use a parabolic shape and cannot be constructed from pre existing parabolas.

Can you use a pre existing parabola as a reference?

>> No.615760

https://www.youtube.com/watch?v=St-0HWKAY4k

use an aluminium sheet instead

>> No.615763

Use parabola to ignite charcoal on your grill. Add some burgers too.

>> No.615771
File: 15 KB, 719x521, quick parabola cooker.png [View same] [iqdb] [saucenao] [google]
615771

>>615738
The worst of the solar cooker designs really. You can reach frying temps with a solar box oven with correct panel design and it is far better since you can cook family size meals in them in the same time as a conventional oven. You just have to design them correctly.

But, to do your project you can have it up and running in about 20 minutes of assembly if you have all the parts. It should take about 3-5 mins to fully cook a single hot dog on a stick.

All you need is cardboard, wood/elmer's glue, and aluminum foil. Something to hold the hotdog (coathanger wire) and something to keep the shape of the cardboard (string) is all you really need. Mix the glue half and half with water and brush it on the cardboard then lay on the aluminum foil, shiny side facing out, and let it cure.

All you need are two strips of cardboard about 1 foot wide by around 3-4 feet long. You can glue pieces of cardboard together by overlapping them and using the glue mixture then compressing them together with books. That's what I do to make larger panels of cardboard. Once the glue is dried, make a big plus sign out of the 2 cardboard strips and glue them together like that. Then apply the foil to them.

Punch one hole in each of the ends of all the plus sign ends. Run a string through the holes of two ends that are across from each other. Start tightening the string up to bring up the ends to make the parabola. Do this with both sides. You may need to bend the cardboard in many places to give it a segmented appearance so you can get the shape just right. You want the focal point to be well below the string since you don't want to burn the string. Do that by making the dip of the parabols deeper.

Then turn it towards the sun, prop it up correctly, and put a hotdog in the center of the focal point. If it does not cook the hotdog fast enough for you then you can add 2 more strips of foil-covered cardboard and make it into an 8-ended shape instead of a 4-ended plus sign shape.

>> No.615816

>>615771
bruh you gotta tell me about the better solar box type cookers

>> No.615817

>>615738
take a satellite dish and cover with something shiny, you will probably be able to cook a hot dog in less than a minute

>> No.615999

>>615817
>cannot be constructed from pre existing parabolas.

>> No.616002
File: 260 KB, 1600x1200, Solar_Cooking_01.jpg [View same] [iqdb] [saucenao] [google]
616002

>>615816
Not too much to tell really. The box itself just needs to be insulated really well. You have to use 2 panes of glass with 1/8" - 1/4" air space between them and the inner glass must be thermally treated glass so buy it precut to the exact dimensions needed or size your box to match whatever you have on hand. The panels to reflect light need to be trapezoid shaped and you use 4 of them, one on each side of the box.

When empty, the temps should reach around 400F-450F, but when you put food in them all that heat gets absorbed by the food. So, the temps you get will to be much lower. Like 300F-350F. Which is good because you don't want it combusting into a ball of fire.

>old pics

>> No.616004
File: 239 KB, 1596x1084, DSCF3483ka_resizeb.jpg [View same] [iqdb] [saucenao] [google]
616004

>>616002

>> No.616005
File: 189 KB, 1600x1200, DSCF3267_resizea.jpg [View same] [iqdb] [saucenao] [google]
616005

>>616004

>> No.616007
File: 129 KB, 540x600, solarfunnelcooker_00_resize.jpg [View same] [iqdb] [saucenao] [google]
616007

>>615816
There are also funnel cookers that do a pretty good job, but aren't as fast cooking a lot of the time. Depends on size really.

>> No.616009
File: 47 KB, 953x614, funnel cooker.png [View same] [iqdb] [saucenao] [google]
616009

>>616007
Plans for making the funnel reflector panel. The jar in that image just has coat hanger wire for the bail and bag support. It has to have a plastic bag around it to help with wind and the bag can not touch the cooking vessel or it'll melt right away.

>> No.616229
File: 436 KB, 531x360, 1393213247985.png [View same] [iqdb] [saucenao] [google]
616229

>>616007
Regarding your picture, how do you get the muffin out of the jar? Seems impractical to bake muffins in a jar.

>> No.616236

>>615738

Hot dogs are already coo/ck/ed, fag. Nice try.

>> No.616252

>>616229
I'd imagine he means a wide mouthed jar. these are apparently common in the US but really hard to find in australia.
http://www.buzzfeed.com/arielknutson/delicious-snacks-in-a-mug

>> No.616254
File: 75 KB, 685x534, 1395705549582.jpg [View same] [iqdb] [saucenao] [google]
616254

they're used in canning. regular jars dont need to be as thick to support the stress of canning so they're the usual jar you'll find. wide mouthed jars are completely smooth on the inside and slightly bevelled so that you can drop the contents out easily.

>> No.616371

>>616229
>>616252
>>616254

You eat it with a spoon out of the jar, not as a single muffin. You could use a wide mouth freezer jar. Those are sloped so you can get stuff out in one piece.