Q: The concrete steps at my house are moldy and kind of green on the risers, except where I applied a concrete sealer. I did it badly, so you can see areas that look like drips. How can I safely clean ...

A different conversation about the capabilities of 3D-printing is happening at edg, a New York architecture and engineering firm which focuses on technology-driven design and the restoration of ...

[Thomas Sanladerer] wanted to create some molds using 3D printing for concrete and plaster. He used a delta printer with flexible filament and documented his process in the video below. If you’ve ...