Sort Rough by Hardness
30 minutessort rough by hardness with precision, following established lapidary methods and verifying results at each stage.
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.
Primary measurement and calculation tool for this workflow.
Verify measurements and validate results against specifications.
Secondary calculations for material quantities and proportions.
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Key benchmarks for tumble polishing rocks.
| Grit | Purpose | Time |
|---|---|---|
| 80 | Rough grind | Coarse |
| 220 | Shape | Medium |
| 14000 | Polish | Fine |
Height : width ratio typically 0.6-0.7 for standard oval
Lapidary slurry contains silica — wet grind and wear respirator.
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.