

How do you get a crisp line with heavy glaze application?
I’ve seen some really cool glaze applications that look quite thick (and like they would run down the piece) but end in a stark line. Is this just conscientious glaze combinations (using specific combos that won’t run) or is wax resist used? I’m still trying to understand what has the risk of running off and if I need to do anything special to get that line! I’ve attached pictures as reference.*
Thank you!
*these are not my photos or pieces! Just an admirer :)