Not to be annoying or anything but is it possible to extend the wear and tear mod to all entities? Maybe as an optional config setting?

"Mining drills, assembling machines, pumpjacks, oils refineries and chemical plants"
imo Electric Furnaces should be added :P

Yeah only electric ones though.

I do plan on expanding to other entities. Currently working on adding solar panels and steam engines. Solar are easy but I'm running into issues on the steam engines. As far as I can see there's currently no function to read whether a steam engine is running, so unless there's some way I am not seeing, I won't be able to make steam engines that are being used age faster than idle ones, which is annoying.

I'll look into electric furnaces as well. It will all be configurable.

Maybe you could have a look at the function weartear.wear(player). You have two loops over the roster and call twice find_entities. I can already see the game freezing every update in my large factory with more than 1000 assemblers. If you also add furnace-like buildings or solar panels, the freeze would become infeasible long. But I really want to play with this mod :)

Maybe you could only update a fixed amount of buildings per tick event, at the cost that some building need more time to age because they are not no longer updated in every function call.

just make Steam Engines age longer..

I'll take a look at optimizing the code. I could definitely limit to a fixed number of buildings per tick event, just have to use a randomizer function to make sure it's not always the same buildings every event.