Building rock tumblers is a project that can help children understand the geological process of the tumbling and smoothing of rocks in water bodies. A homemade rock tumbler is also a creative way of making polished rocks and stones for adornments. Read on to know how to build one at home.
DIY rock tumbler. haha had to pin it because it looks so genius with the furniture coasters and coffee can! just need a hand crank, and to maybe to add height to the front coasters so the can is tilted. :)