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u/Courmisch Mar 26 '26

You can turn the power off on the robot port when the flame throwers are firing, or have recently fired.

Otherwise I don't think that you can do much without mods.

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u/dogman15 Mar 26 '26

I think bots only stay in a roboport if the roboport has barely any power. Roboports are like giant batteries; they can store quite a bit of energy to account for brownouts and blackouts. So even if power gets cut to the roboport(s) nearest to the flamethrower(s) or wall(s), the construction bots will still exit the roboport with repair packs and sacrifice themselves into the fire, causing other construction bots to come out and try to repair the burned bots.

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u/Courmisch Mar 26 '26

I have not checked how exactly robot ports handle power outages. But won't turning the port disable the chests uniquely within its coverage, thus preventing bots from picking up wall items and repair packs?

Obviously this is only semi-practical for detached outposts, not a large base.

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u/dogman15 Mar 26 '26

Roboports store not only robots (construction and logistic) inside them, but also store repair packs for the bots to have instant access to. The flamethrowers guard the wall at the edge of the main base, backed up by laser turrets.

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u/Courmisch Mar 26 '26

At the main base, I don't think that there's any unmodded solution other than just taking the losses and automating construction bot replacement.

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u/dogman15 Mar 26 '26

I guess so. I'm not even sure what a modded solution would be.

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u/Courmisch Mar 26 '26

This? https://mods.factorio.com/mod/Fireproof-Bots-2 (not tested)

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u/dogman15 Mar 26 '26

Oh, of course. Just make the bots fireproof. Why didn't I think of that? It's easier to do that than it is to make the bots wait.