BL Workshop

Make a solar hot dog cooker

If you curve some aluminum foil just right, you can cook hot dogs with the sun’s heat.



  • Utility knife
  • Tape
  • Saw
  • Drill
  • Roofing nails
  • Glue
  • 2 sheets of corrugated cardboard, 7 1/2 inches by 30 inches
  • 2 2-by-2-by-12-inch connector boards
  • Piece of poster board large enough to cover the bottom of the cooker
  • 12-inch-wide aluminum foil
  • 2 1-by-1-by-13 1/2-inch wood uprights
  • Small wooden dowl, sharpened at one end


Step 1. Using the utility knife, cut a curve from the two pieces of cardboard.


Step 2. Connect the curves together using the 12-inch connecting boards, glue and roofing nails.


Step 3. Bend the poster board over the curves, mark with a pencil and cut to size. Glue and tape in place.


Step 4. Spread glue evenly onto the poster board. Carefully glue down the aluminum foil. Make it as smooth as possible.


Step 5. Drill a hole in one upright, cut a notch on the other and glue in place.


Step 6. Aim the cooker at the sun, skewer your hot dogs, and get the rolls and mustard.



The sun reflects heat off the parabolic curve and concentrates it at a single point.

Comments about “Make a solar hot dog cooker”

  1. skate says:

    how hot does it have to be???

  2. LEGOscout says:

    COOL I WANT TO TRY!!!!!!!!!!!!

  3. CUCKOO MONKEY says:

    This is like the solar powered pizza oven I once made!!!

  4. Weblo scout cole says:

    Cant wait to try it a campout but I will modafy it a little

  5. RAINBOW says:

    I love me some hot dogs

  6. the scout says:

    i have a solar powerd oven that cooks smores

  7. Big dude says:


  8. captain1- says:

    I’ll try it on my next campout

  9. C.J. says:

    How hot will it get in 15 min.?

  10. mathiselle says:

    How do you know where to place the hotdog skewer? In other words, how do you determine the focal point…or do you just wing it? curious. I do a similar project but we use copy paper boxes. The kids have to keep the focus in the box. I think I want to modify the project and use your idea but tie more of the math to it. And is there a reason you chose the dimensions you used?

  11. vamp says:

    wow.i will try it.

  12. Minecraft says:

    I can’t wait to try it :D

  13. Minecraft says:

    I just like building it

  14. sadfish says:

    Hey this is cool.I made one.It works well.I like it.Thanks for the instructions.

  15. Olive says:

    Our teacher told us we had to make a hot dog cooker..thanks so much…but does anyone know how many degrees it goes to? the minimum we are required is 100C

    • Kat says:

      Hey, just wondering if this worked for you :P I’m doing the same thing, and wanted to know how hot it got, and how well it worked. Thanks :)

  16. Eagle Scout Grampa says:

    If you want to get really creative you could figure out a way to connect an electric motor to the skewer to slowly turn it so the Hot Dogs cook evenly on all sides. :-)

  17. Fabjan says:

    Does this work in the Moonlight?

  18. Tedric2 says:

    Its only a hotdog, most are fuly cooked in the package dude,

  19. Jafo says:

    How to get the proper curve
    A math specialist could make a program to print it up from a computer over a couple pages of paper
    Then the rest of us could download the printouts, Print them and use them for templates

  20. AJ says:

    Awesome I am so using this for my Solar cooker project THANKS SO MUCH TO who ever got this idea

  21. weinerchef23 says:

    how long does it take to cook?

  22. jonwanton says:

    i am using this for a science fair

  23. hotdoglover says:

    how long will it take to cook a hotdog?

  24. muscle man says:

    this project is the best

  25. mj says:

    How long does it take to cook?

  26. josh says:

    any suggestions as how to draw a perfect parabola curve onto the cardboard?

  27. rip says:

    this looks kool. i should make it some day

  28. dodgeboy says:

    simple but effective

  29. Second Class Scout, Troop 550 says:

    This is really neat. Will this solar hotdog cooker work in the winter when the temperature is below 40 degrees Farenheit. Hot dogs will cook on an asphalt parking lot in July or August on a piece of aluminum foil when the temperature of the asphalt has been heated to about 95 degrees Farenheit.

  30. Shaggyeagle says:

    Cool we are supposed to make one of these in science and now that I have an idea of what to do imma volunteer to be team leader in our group, as I always do

  31. fred says:


  32. Complicated says:

    Not complcated

  33. wilster says:

    How long do you have to wate for it to cook

  34. makanzie says:


  35. killerz says:

    this things pretty usefull

  36. Zach the Man says:

    This gives me an idea for an invention!!:)

  37. beast gurl says:

    bro this is actually a good project, so far i hav gotten passing grades on mah project :p

  38. KayKay69 says:

    if it gets me a A on my project it will be cool i guess.!!

  39. nutterbutter says:

    this is easy and fun to do!!

  40. ? says:

    how hot should the hot dog cook to?

  41. surya says:

    nice & simple project.

  42. haha says:

    how many minutes does the hotdog need to be cooked with that project?

  43. Anonymous says:

    can also use a old satellite dish (the curved surface) covered with tin foil! even the gottom of a soda can will suffice for cooking experiments (a piece of hot dog). this is part of a survivalist kit!!

  44. angle says:

    this was a cool project

  45. angel says:

    love it the best ever in the world going to do this project :)

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