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Two points:

1. The article says its "cheap" for what that's worth.

2. This IS concrete. It's a mixture of sand as aggregate and plastic as a cement AKA binding agent.

I thought this was pretty cool, but then 50% of the recommended posts are about NFTs, which are a known scam. They are also by the same author as this post. So this tells me the author isn't necessarily looking at things with the most critical eye.

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