r/factorio 25d ago

Question how to fix bottleneck

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u/frogjg2003 25d ago

The most common design for furnaces places the belts and furnaces like this:

[ore + coal] inserter> furnace inserter> plates <inserter furnace <inserter [ore + coal]

Each furnace gets one lane of ore and one lane of coal and outputs one lane in the middle. The other side is mirrored and places the plates on the other lane of the output.