Master guillocheur Supachai Wattanakanokthan demonstrates how to use the guilloche turning machine, and he's been guilloche'ing for 16 years! I noticed that his name sewed onto his white lab coat only had part of his last name, and he chuckled that his Thai name is so long that the space where his name is sewed onto his white lab coat is too short. Just something silly I remembered :P
Once you finish guilloche'ing that line, you then have to adjust the 2 knobs circled in red to proceed to the next line, and you have to remember how many turns on each knob because they decrease and increase at a different set interval each time, so if you forget which interval you're at, you have to start over! (I hope I am describing this correctly!)
Look I can guilloche without looking at the dial? :P (just joking of course!)