Why adding machines does not increase iron plate production

Work backwards from plates to ore

For the standard process considered here, one smelter consumes 30 ore per minute and produces 30 ingots per minute. One constructor consumes 30 ingots per minute and produces 20 plates per minute. Each plate therefore requires 1.5 ingots and 1.5 ore. Multiply the desired plate rate by 1.5 to find the required flow through the two earlier stages. Comparing the number of ore directly with the number of plates overlooks this conversion.

A target of 80 plates per minute requires 120 ingots and 120 ore per minute. Four smelters can supply those ingots, and four constructors can produce the plates. These are capacity calculations. Installing the machines does not prove that every machine receives its input or that its output remains clear.

Why a target of 81 changes the machine count

The next plate requires a larger installation when machines are planned at unchanged 100% clocks. A target of 81 needs 121.5 ore and 121.5 ingots per minute, exceeding the 120-ingot capacity of four smelters. Four constructors also stop at 80 plates per minute. Rounding the required machine counts upwards gives five smelters and five constructors.

That installation does not always produce 100 plates per minute. With only 121.5 ore arriving, the supply-based ceiling is 81 plates. With 150 ore arriving and sufficient transport, the installed process can reach a capacity ceiling of 100. Distinguish the supply needed for the target from the supply needed to keep every installed machine continuously active. Waiting machines can reflect the chosen supply rate rather than an incorrect machine count.

An adequate output belt can hide an earlier bottleneck

Suppose each stage uses one shared belt with a capacity of 120 items per minute. The plate output target of 81 fits on that belt. The ore and ingot stages, however, must each carry 121.5 items per minute. A 120-item limit in either earlier stage caps the standard process at 80 plates per minute. Upgrading only the output belt leaves that restriction in place.

Using a 270-item belt for the required shared segments removes the transport restriction at this target. It does not create more ore. If the incoming supply remains 120, the plate ceiling remains 80. Supply and transport are separate changes. With 150 ore, adequate transport and five machines at each stage, installed capacity reaches 100 plates per minute. This is a steady-state calculation ceiling, not a measurement or a promise about a particular factory.

Inspect the line in a useful order

First compare the required ore rate with the ore actually arriving at this process. A miner's capacity is insufficient evidence if the route also supplies other consumers. Next check the number of smelters and constructors separately. Then inspect every shared transport segment, including short connections. Replacing most of a belt does not remove a slower segment that remains in the path.

Check delivery after the branches as well. Enough total input does not establish that every machine receives enough material. Inspect the product exit and downstream storage or consumption. A constructor stopped by a full output needs a different correction from a constructor waiting for ingots. Finally distinguish interrupted power and startup behaviour from stable production.

Arrange the process for inspection and expansion

A conceptual arrangement follows ore entry, smelting, ingot transfer, construction and plate exit. Separate the stages and keep the main transfer paths easy to trace. This makes empty inputs and accumulating outputs easier to locate. Leave room for transport improvements or a separate supply path as well as additional machines.

This is a process diagram principle, not a blueprint with verified foundation dimensions. Available space, vertical connections and interference with other lines require checking in the game. The purpose is to identify which stage must change when the production target changes.

Check the result after a change

Record the target, arriving ore, belt capacity and machine counts before changing the factory. Correct one identified limitation, then observe the line after material reaches the machines and the process settles. If output remains below the calculated ceiling, inspect input waiting, blocked output and power before increasing the planned capacity again. A brief change in stored inventory does not establish a stable per-minute production rate.