Cardboard Lumber

Step 9 Honeycomb Plywood

Once you have your lumber, you can either use these individual pieces, or you can glue them, edge-to-edge and create a very, very strong block of cardboard suitable as a tabletop or seat. Because the corrugations are all vertical (as a tabletop) and not horizontal, it has much greater strength.

Comments

[skatattookid]

interesting link on this topic..http://math.ucr.edu/home/baez/physics/General/Glass/glass.html

[rrrmanion]

hard as glass? technically, glass isn't hard, because in fact, glass is a liquid... though this may just be an expression, but i've never heard it.

[chello2k9]

Glass is a liquid....ok.

[rrrmanion]

glass is what's known as a super cooled liquid. if glass was a solid, it would be opaque.. apparently anyway..

[starfox365]

Well, glass is CAPABLE of being a liquid. If it's melted down to extreme temperatures, it becomes like a gooey lava. I've seen glass blown before, and it's quite the site, seeing how pliable glass can be before suddenly becoming a solid to be reckoned with. :3

So, really, glass is a liquid. Until it becomes a solid. Things can change category, just as the 'liquid' form of water is water, and 'solid' is ice, and 'gas' form is mist/steam.
Many things have the range of becoming all three. :D

http://www.glassbirds.com/iittala-glassworks.html

[rrrmanion]

it's called molten glass when it's melted down

[crowd9]

Actually, diamonds are solid and transparent. Glass flows in cosmic time, inciting this age-old debate. For all intents and purposes, glass is a solid (unless you have a century-long slow motion camera), additionally, glass is definitely harder than other substances--hence, it's capability to cut those other substances.

[rrrmanion]

well, i wasn't fussed about rate of flow, but thanks anyways, insightful

[112251919112]

Thats like saying that everything solid is just a super cooled liquid, not a solid,

[Bob_of_Mars]

I'm afraid that is not true. Here, allow a physicist to explain:
http://www.youtube.com/watch?v=Omr0JNyDBI0

[rrrmanion]

well, some say it is, others that it isn't, I like the idea that it is because it's sound cool.

[XTL]

Actually just because a number of people have made a mistake and believe something to be true, when it is not - doesn't make it a type of true.
Or in other words "Endless repetition of a lie - does not make it true"
Just as when people talk trash about you - it doesn't mean its true.

In this case Glass is a solid (when it cools). Many materials are transparent and the video from sixty-symbols (above) explains why.

Glass also has a very special property and its why its called Glass. Generally when materials cool and harden into solids they form regular atomic structures - like Crystals. In fact all metals do this and is why they are called metals. Glasses do not form regular crystal-like structures. Instead their structure is more random and locally connected. This is why it forms sharp edges and irregular shards when it is broken.

Try listening to this explanation. http://www.youtube.com/watch?v=2Fk3y_lPr6Q