tinker

a person who enjoys fixing and experimenting with machines and their parts

formerly a person (traditionally a Gypsy) who traveled from place to place mending pots and kettles and other metal utensils as a way to earn a living

small mackerel found nearly worldwide

A mender of brass kettles, pans, and other metal ware.

do random, unplanned work or activities or spend time idly

work as a tinker or tinkerer

try to fix or mend

To mend or solder, as metal wares; hence, more generally, to mend.

To busy one's self in mending old kettles, pans, etc.; to play the tinker; to be occupied with small mechanical works.