Stop an unwanted belt exit or splitter output

Choose the method for the exit you actually have

Use the reversed section for the end of a normal conveyor run. Use the closed-output setting when the unwanted exit belongs to a Smart Splitter already in your factory. This guide starts with those pieces available; the source does not explain their unlock sequence or purchase price.

The original complaint says splitters can bypass a blocked belt. Trace the branch before changing anything: stopping one belt does not close another output connected to the same route.

Make a short reversed section at the end

1. Locate the final belt section you want to block. Keep the intended working route and scanner coverage visible while you plan the change.
2. Add a small belt section at that end. Orderless_Chaos's instruction is to make the stopper a short separate section.
3. Reverse the short section's direction. Use the direction control available in your build. The reply gives no key binding, so this guide does not invent one.
4. Watch the meeting point. Check whether items stop at the opposed direction rather than escaping the belt end. Also check that the branch you intended to keep still receives items. This observation is how to evaluate the workaround in your own build.

Close a Smart Splitter output

1. Select the Smart Splitter on the unwanted route and identify the specific exit.
2. Use its output control to set that exit to closed, as KITOMER describes. Do not close the working exit by mistake.
3. Observe the closed exit and the remaining destination. Confirm that the stopped output stays stopped and the useful route still works.

The replies also mention overflow routing, but do not establish its priority, ratios or exact menu sequence. A closed exit and an overflow exit are different intentions: use closed when you want no output there. This is not a full load-balancer recipe.

Check bypasses and incoming flow

If material still escapes, follow every connected branch and arm-fed route. A stopper on one conveyor does not prove that all routes are blocked. If the upstream line fills, you have stopped an exit without providing another destination; inspect where the incoming material should go before adding more production.

Do not reroute unscanned hay straight to SELL or a furnace just to clear a jam. Keep the scanner before those destinations. If neither method behaves as described, report your build and a screenshot of the belt direction and connected outputs in the source thread.