In keeping with the grand tradition of creating ways to warm my lunch at work with readily available office supplies, I present for your review, dear reader The Office Worker's Portable Solar Oven.
Step 1: The Situation
Due to circumstances beyond my control, my cubicle at work is close to both the break room and a small loading area on the second floor. Because of this I usually have a wall of boxes filled with copier paper situated somewhere behind me. Aside from this being a nuisance when it comes to concentrating on my job it also affords me the opportunity to scavenge as many copier boxes that a man can get his hands on.
This is a perfect situation to improve upon my earlier solar cooking ideas.
See here: http://www.instructables.com/id/Dashboard-Chilli/
Step 2: The Result
Behold! My dashboard cooking days are over. I present to you The Office Worker’s Solar Oven. This project was built completely with materials laying about the office, with the exception of tinfoil, which I picked up at the dollar store.
Step 3: Gathering the pieces
Above you can see all the precut pieces to form the main cooking chamber. I cut the box at an angle of 20 degrees to allow for maximum exposure to the sun. In my latitude the lowest elevation that the sun gets is 26 degrees above the Southern horizon.
Be sure to cut your box accordingly if you plan to make one.
Step 4: A little design consideration
I designed the oven to allow for one inch of insulation on each side of the box. To do this I placed slots in the inside liner. This is the back piece.
Step 5: More design consideration
These are the sidepieces, slotted as well. I also cut these with an angle of 20 degrees.
Step 6: Some Assembly Required
As you can see the slotted pieces fit together nicely.
Likewise the liner fits nicely into the oven box.
Step 7: The Insulated Floor
Once I was sure that everything fit together, I removed all the pieces and put a one-inch spacer in the bottom of the box to keep the bottom of the oven above a layer of insulation.
The insulation I used was just shredded documents I salvaged from the office shredder.