the inserters & Transport belt can easily upgrade to the all levels, but furnaces can only upgrade to the steel without a destruction of whole structure
Originally shared on the public FactorioPrints / Factorio School archive (factorioprints.com · factorio.school). Authorship preserved from the public catalog.
the inserters & Transport belt can easily upgrade to the all levels, but furnaces can only upgrade to the steel without a destruction of whole structure