Wheat paste is refined by straining it through a horsehair strainer, which ensures that its consistency is absolutely uniform.
These are made of either glass or Plexiglas. They are normally used in flat paper mending, in conjuction with Japanese tissue and paste.
Though it is actually a kitchen tool, the sauce cooker is ideal for cooking wheat paste because it both heats and stirs. This frees up time to be doing something other than cooking it manually.
Also the kitchen variety, the spatula is used for scraping containers when making methyl cellulose and wheat paste.