Improved Furnace
Production30000 work
Allows refinement of Refined Ingot. The quality has improved, but the processing speed is still unsatisfactory. Requires a Fire Pal to light a flame.
Unlocked by Improved Furnace
Build Cost
| Stone | ×100 |
| Cement | ×30 |
| Flame Organ | ×15 |
| Cryogenic Coolant | ×5 |