The putter
In Sheffield (once the great centre of cutlery manufacture) the person who assembles and adjusts scissors is called a putter-together, sometimes putter-togetherer, often shortened to putter. It takes years to develop the skill and judgment to do this job really well.
In this video we see Cliff Denton at work. He is a putter at Ernest Wright & Sons Ltd, one of the few Sheffield businesses that still makes high quality scissors in the traditional way.