Half a croissant, on a plate, with a sign in front of it saying '50c'
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One Used Tube Deserves Another

interlocking cardboard tubes
  (+16, -4)(+16, -4)
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When you come to the end of a toilet roll you are left with a stubby section of virtually useless cardboard tubing.

One Tube Deserves Another requires a slightly new manufacturing system, and though it involves the consumption of more cardboard, the result is a tube that has the potential for a useful outcome.

To understand the idea, think of two tubes of the same length, but one fits inside the other. Now imagine the inner tube is pushed out by a half inch and fused into position. This means that the tube now has a "male" end and a "female" end.

This enables the empty cardboard tubes to fit together and be used as a simple construction material.

xenzag, Dec 12 2007

Illustration http://web.mac.com/...rves%20another.html
The start of something big... my first effort with Illustrator CS [xenzag, Dec 17 2007]

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       //virtually useless// Now *that's* a challenge! {starts compiling mental list of 101 uses for a dead toilet roll}
pertinax, Dec 12 2007
  

       BUN! This would be good for recycling too!
Jscotty, Dec 13 2007
  

       Every 5th of these could have flexible pleats (like a flexible drinking straw) so you can build curvy piping. Every 10th of them could have an interior hole so you can make branches.
phundug, Dec 13 2007
  

       Make them all with flexible pleats and at least two holes, to allow flexible construction.
UnaBubba, Dec 13 2007
  

       edit - (I inserted the rest of the second sentence)
[phundu] if all of the toilet rolls were available as either "straights" or "curves", then many forms could be constructed. The degree of cuvature of the rolls could be printed on the outside.
"6 pack of bog roll please" - "Certainly Sir - straights or curves?" - "Eh, 3 shallow arcs, one acute, and two straights"
xenzag, Dec 14 2007
  

       Excellent idea. Some tubes should be capped at the end, so you can finish off your constructions neatly.
hippo, Dec 14 2007
  

       If this is part of a range of bathroom products, then the lids of, pehaps, bottles of powder, or packaging for toilet cistern blocks could be designed to be neatly fitting "caps" for the tubes.
8th of 7, Dec 14 2007
  

       No T joints, then?
RayfordSteele, Dec 14 2007
  
      
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