Glassblower

Tom is a glassblower.

I know that Tom used to be a glassblower.

I know Tom used to be a glassblower.

But through the oligopoly, charcoal fuel proliferated throughout London's trades and industries. By the 1200s, brewers and bakers, tilemakers, glassblowers, pottery producers, and a range of other craftsmen all became hour-to-hour consumers of charcoal.