The literal translation of the term is a voltage reference. Stepper motors drivers have a device designed to maintain an accurate, low noise, constant output voltage. This is the exact description of what the driver does. The driver is the electronic device that takes care of guiding the stepper motor through the translation of the signals(an electric current) that are given to it by a processor.
Everybody who owns a 3D printer has experienced a clogged nozzle at least once, or most probably it will happen sooner or later. A clogged nozzle is a common problem and afflicts printers worth 200$ as well as printers worth 2000$.
Making your miniatures is amazing, I’ve met lots of hobbyists that use 3D printing particularly to create models and paint them. But if you don’t have a resin printer it can be a hard challenge achieving good quality prints.