Definitions for "Tinkerer"
an unskilled person who tries to fix or mend
a traveling repairman who mends broken things (such as metal household utensils)
The Tinkerer is a fictional character in the Marvel Comics universe with an almost superhuman gift of genius in engineering, able to invent sophisticated gadgets from nothing more than spare parts left over from ordinary household appliances. He is the third biggest weapon provider of the gangland (after Justin Hammer and Madame Menace). He has equal abilities to the Fixer.
a combination blacksmith, jewelcrafter, clock-maker, handyman, etc
a person who enjoys fixing and experimenting with machines and their parts