Sort Rough by Hardness
30 minutessort rough by hardness with precision, following established lapidary methods and verifying results at each stage.
Field context
This workflow is part of 1 niche field
Learn tumble polishing rocks from scratch with a clear step-by-step workflow, recommended tools, safety guidelines, and expert tips.
sort rough by hardness with precision, following established lapidary methods and verifying results at each stage.
load barrel correctly with precision, following established lapidary methods and verifying results at each stage.
run grit stages with precision, following established lapidary methods and verifying results at each stage.
calculate cycle times with precision, following established lapidary methods and verifying results at each stage.
burnish and dry with precision, following established lapidary methods and verifying results at each stage.
Key benchmarks for tumble polishing rocks.
| Grit | Purpose | Time |
|---|---|---|
| 80 | Rough grind | Coarse |
| 220 | Shape | Medium |
| 14000 | Polish | Fine |
Keep stone wet while grinding — dry silica dust causes silicosis.
Never skip grit steps — each stage removes scratches from the previous.
Wear safety glasses even when wet grinding — slurry splashes at high speed.