The fiberglass material where its soft and light but sturdy fro rips
No, brick is not translucent. It is a solid building material that does not allow light to pass through it.
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· light fixtures · lightning rods · linoleum · locks · lumber
A roof dome is a cheap and effective way of bringing natural light into any type of building.
Steel, light weight, stainless, sturdy, it will not rust and the lead to civilians dropping onto the tracks, or worse into the path of a train.
Pumice stone mixed with concrete.
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· light fixtures · lightning rods · linoleum · locks · lumber
There are several materials you can use. Plastic assignment folders make an excellent fin because they are light weight and more durable than paper. Corriflute (Correx) is also a great material as it to is sturdy. (i am assuming you are building a 2 liter water bottle rocket) Avoid using paper and card board as the water can damage the fins making them anti-productive.
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It's light enough, cheap enough, strong enough and easy enough to work with.