“Stick Out” is a term used in MIG welding. The farther you hold the gun away from the work piece, the farther the wire sticks out. The amount of stick out affects the arc. The more stick out, the greater the chance of contaminating the weld due to shielding gas mixing with air.
In manual welding, the machine holds the voltage constant and the amperage varies as the stick out changes. With synergic welding, the machine monitors many variables and optimizes the arc. So, in synergic, it’s more complex than just voltage and amperage. There’s more room for the machine to compensate for user error.