a person with secret knowledge of a manufacturing technique
arcanist in American English
(ɑːrˈkeinɪst)
noun
a person professing special secret knowledge concerning ceramics, esp. concerning the making of porcelain
Word origin
[1900–05; arcan(um) + -ist]This word is first recorded in the period 1900–05. Other words that entered Englishat around the same time include: clone, hookup, hydroplane, internship, throwaway-ist is a suffix of nouns, often corresponding to verbs ending in -ize or nouns ending in -ism, that denote a person who practices or is concerned with something, or holds certainprinciples, doctrines, etc. Other words that use the affix -ist include: Thomist, machinist, novelist, realist, socialist