05
Copper and bronze
Earth parallel: Bronze Age. Goal: metal tools that can be cast, sharpened and recast.
| ID | Achievement | About year |
|---|---|---|
| 05.01 | Ore sample collection and simple testscolour, weight, streak, what a hot fire does | 2 |
| 05.02 | Cold-hammered native copperbeads, awls, small blades; softened again by heating | 2 |
| 05.03 | Fire-set open-cut mine ⚠rock heated by fire, cracked with water, prised out | 2 |
| 05.04 | Ore dressing floorcrush, hand-sort and wash the ore | 2 |
| 05.05 | Smelted copperthe first metal won from rock | 2 |
| 05.06 | Open moulds and cast copper ingots | 2 |
| 05.07 | Beam balance and weightsrecipes need measured parts | 2 |
| 05.08 | Smelted tin | 2 |
| 05.09 | Bronzenine parts copper, one part tin; harder and easier to cast | 2 |
| 05.10 | Two-piece moulds with clay corescast hollow sockets | 2 |
| 05.11 | Bronze axe and adze | 2 |
| 05.12 | Bronze hammers and anvil block | 2 |
| 05.13 | Bronze tongs and crucible lifters | 2 |
| 05.14 | Bronze chisels, gouges, punches and drill bits | 2 |
| 05.15 | Bronze sawfirst true saw, teeth cut with a chisel | 3 |
| 05.16 | Bronze knives, sickles and razors | 3 |
| 05.17 | Bronze spear and arrow heads | 3 |
| 05.18 | Bronze pick, wedges and crowbarmining and quarrying | 3 |
| 05.19 | Lost-wax castingany shape, fine detail | 3 |
| 05.20 | Bronze bell, horn and signal flagsalarm, recall from the fields, messages between the settlements and to boats | 3 |
| 05.21 | Bronze needles, pins, hooks, nails and rivets | 3 |
| 05.22 | Hammered copper sheet and riveted cauldronlarge metal vessels | 3 |
| 05.23 | Hammered copper rod and thick wire | 3 |
| 05.24 | Copper beadssmall even beads on a cord, worn, and given at births and pairings | 3 |
| 05.25 | Smelted lead ⚠soft, heavy, resists acid; vital later for chemistry and batteries | 3 |
| 05.26 | Silver ⚠parted from lead by burning the lead away on a bed of bone ash | 3 |
| 05.27 | Lead sheet, weights and pipe ⚠ | 3 |
| 05.28 | Soft solder and solderingjoins metal without melting it | 3 |
| 05.29 | Bronze healer's toolstweezers, probes, needles, lancet and cautery iron | 3 |