Smithsonian Rock Tumbler Toys tumble dry low

tumble dry low

This kit makes learning about architecture and structural engineering engaging

psychology

or prehistoric-themed curiosity

Instead of bulky supports

Smithsonian Rock Tumbler Toys tumble dry lowTurn rough rocks into beautiful, polished stones that you can use to make charms, bracelets, keychains, and more. Begin by tumbling the included rocks in a barrel with water and grit, then repeat this cycle using progressively finer grits. In just weeks, the Smithsonian Rock Tumbler mimics the process that takes oceans thousands of years! Turn rough rocks into beautiful, polished stones! Includes accessories to make charms, bracelets, and keychains.