Legendary Iron via pipes and belts

50 grid, creates legendary iron plates from calcite

Output:

• 63'400 per hour
• 1'056 per minute
• 17.6 per second

Also use:

• Outline of where you need the lava - https://factorioprints.com/view/-Oy-viXiO8kOzzZdpCxq
• Mask to cover areas that don't need lava - https://factorioprints.com/view/-Oy-w2X-rKdg-FXsfK8K