I think, If it's possible, it would require some lua scripting. You can't just set up a recipe that way easily.

Survivors do prioritize the lowest durability material first though, so if you did "times' instead of "until" you could just set it to do the number you actualy need repaired and it would pull only the lowest durability ones to do it with.

I'm curious though, if you got it to work at all to properly create an output that is the same as one of the inputs?

My attempt at setting up a recipe to "repair" good luck charms just failed to produce any output at all. That's what happens any time I set up a recipe where an input and output are the same item/resource. I haven't tried since the last game update though, which is why I ask.

(I instead just made a recipe to "recycle" the good luck charms, which works because the output is different).

Thanks, I will check what you tell me, I have a couple more ideas, and if it works, I will upload the mod to workshop in case you want to take a look at it.

I will try to do it without Lua Script.

Regards.

You were right, the survivors do use the least durable material as an ingredient.

And if in the recipe both in the input and output is the same object, it results in the elimination of this, so there are only two possibilities, either recycle the item, or configure them with infinite durability.
I have not been able to find a solution to this issue.

Regards.