Stencil user, perhaps

• Sign printer
• Sign painter, at times
• Calligrapher
• Sign painter
• Draftsman, at times

Wiktionary Word definitions in Wiktionary
n. 1 A person who is professionally employed to add writing to something (as a sign, shop window, etc.) 2 A particular profession in the production of comics, an artist specializing in neatly writing written material such as dialogue. 3 A device for printing ...

WordNet Word definitions in WordNet
n. a painter of letters

Wikipedia Word definitions in Wikipedia
A letterer is a member of a team of comic book creators responsible for drawing the comic book's text. The letterer's use of typefaces , calligraphy , letter size, and layout all contribute to the impact of the comic. The letterer crafts the comic's "display ...

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Letterer \Let"ter*er\ (l[e^]t"t[~e]r*[~e]r), n. One who makes, inscribes, or engraves, alphabetical letters.