The sublimation process truly is all about trial and error and creating a technique that works for you. Seamless tumblers tend to be the hardest substrate to master, but it can be done! Here is @selenamariellc ‘s technique: “This tip is for my sublimators who are struggling with getting a good press at the top and bottom of their tumblers. The tape around the bottom of the tumbler is not necessary however I like to do it for extra pressure around the bottom. Here are my steps: 1. Wrap design aro