Metal Casting
We started with 30 pennyweights of bronze casting grain poured into the crucible. The start time was 2:12 and the finish time was 2:20.
Temperature (F) | Steps |
878.7 | Initial heat of flame |
1217 | First metal temp |
1276 | Second metal temp |
1624 | Third metal temp (flask goes in) |
1700 | Pin dropped, spinning |
998 | Flask is removed |
889 | Still red (do not quench) |
505 | Quenched, hot after smoothing |
Weight (raw, pre-cut metal) | 48g |
Weight (with sprues cut off) | 24g |
Circle Process
This table shows how long it took to create the circle on the piece of metal using the compass tool.
Name | Start Time | End Time |
Phoebe | 2:34 | 2:36 |
Dane | 2:30 | 2:32 |
Beck | 2:36 | 2:38 |
Sally | 2:30 | 2:32 |
Maddie | 2:32 | 2:34 |
2:40-3:30 PM was spent filing the inner and outer circles with a saw (about 50 minutes total, with 40 minutes spent on the outer circle and 10 spent on the inner circle per person).
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