what makes a villager a leatherworker

A villager becomes a leatherworker when it claims a cauldron as its job site block; an unemployed or jobless villager that links to an available cauldron will automatically take the leatherworker profession and change its outfit accordingly.

Core mechanic

• Villager professions are determined by their job site block, and for leatherworkers that block is the cauldron.

• When an unemployed villager (or a villager whose old job block was broken) finds an unclaimed cauldron within range, it will path to it and switch to the leatherworker profession.

Requirements to become a leatherworker

• The villager must be either completely unemployed or have its previous workstation destroyed so it can reconsider professions.

• There must be a free bed and an unclaimed cauldron; if another villager already links to that cauldron, no new leatherworker will be created.

What leatherworkers do

• Once converted, the leatherworker trades leather gear and related items, such as dyed leather armor, leather horse armor, and saddles, with trade tiers improving as its level increases.

• The cauldron is used in-game as their workstation, and they can be seen interacting with it to dye leather items they offer.

Information gathered from public forums or data available on the internet and portrayed here.