Step 3: Cut and Crease the Roof Section

Cut two of the unfolded box sheets as shown in the diagram.  The blue dashed lines are new creases that you will score with the spline tool so they fold precisely. 
<p>Awesome Idea, and just need to add polyurethane Spray to waterproof is all. Works great. Made a newspaper boat, and sprayed it with polyurethane and it worked great!</p>
very good
Waxed Cardboard. Like the kind of boxes used for veggies.<br>
Yes wax helps. Sometimes they laminate one side with plastic to waterproof. Paint also work.
Very nice design concepts. I can see this as an alternative to a flimsy camping tent for wet weather camping or extended camping trips. More of a semi-permanant structure. Of course it would need to be made out of something other than cardboard boxes for that type of use. Very nice job developing an idea! Hopefully this can be a catalyst for other people to explore this concept.
Thanks for your comments. My next instructable shelter will be made from 4'x10' Coroplast sheets, a step up in durability from cardboard. Every material has its advantages and disadvantages, and the material selected will be a compromise between these for the given application. Cardboard may fall apart in damp weather, but it may be advantageous to have a material that can be recycled, composed, or burned for fuel at the end of its life. Coroplast degraded under ultraviolet light, which could be a benefit if we don't want the stuff cluttering up the environment for the next century.

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Bio: EE, retired
More by dome_head:Fold-up Playhouse Emergency Shelter II from Coroplast Emergency Shelter from Wardrobe Boxes 
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