The Sublimation Heat Press Machinedesigns for the blanks cups,tumblers and mugs which bottom diameter ranges in 2.64 to 3.43 inch,and height is below 16 inch(Mostly tumbler can be used) 11oz 15oz 20oz 30oz Tumbler Heat Press，Twist the screw to adjust the diamester of the attachment for different tumblers. Protecting from heating unevenly,Suggest twice operation of using large pattern Package includes: 1 x heat press machine with adjustable attachment It's Normal Phenomenon that temperature get down when a tumbler set in the machine. And Supplementary time will not affect the sublimation effects. Sometimes Voltage unstable will affect the temperature stable, If appear the temperature plunge down, for the effect of sublimation,please heating one more time.. Tumbler Press Machine Bundle All in One for 11oz, 15oz, 20oz, 30ozTumbler Mugs Heat Press READY TO SHIP Heat press sublimation tumblers are semi-automatic. You have to adjust the pressure manually and move the heat plate manually.