Many of us have marveled at art installations that feature ... On top of the table, a metal sphere attached to the magnet moves through craft sand to draw attractive patterns.

A metal ball rolled under the glass surface of the coffee table, creating amazing sand art. It made and erased beautiful patterns throughout the day. The scene looked satisfying as the sun set in ...

[Brian] completes the process with a simple gravity casting method using molten aluminium. The part is then removed from the mold, and filed down to improve the surface finish from the sand ...