hobby #63

Rock Tumbling

Polishing rough stones in a rotary tumbler through four progressive grit stages over 4-6 weeks. Coarse silicon carbide (60/90 grit) shapes the stones, medium grit (120/220) smooths, fine grit (500) refines, and aluminium oxide polish brings the final shine. Geology meets patience meets materials science—ugly gravel transforms into something you can't stop touching.

Mar 8 5:26 PM #63 3 min

Four Weeks Before the Gravel Remembers How to Shine

Rock Tumbling

Silicon carbide is stardust. I'm using it to polish gravel in a rubber drum for a month.

sciencecraftmakingcollectingnature