tinkering

This term conveys a sense of casual, iterative experimentation. It suggests a process of trial and error where the person may not have a professional certification or a rigid plan, but rather a curiosity-driven desire to see how something works or how it can be improved. It carries a lighthearted, hobbyist connotation, often associated with garages, workshops, or software "hacking" in its original sense.

When used as an adjective, it describes a methodology that favors incremental adjustments over a complete redesign. While "repairing" implies fixing something that is broken, "tinkering" implies a more playful or exploratory engagement with an object, where the goal might be optimization or simply the pleasure of the process itself.