Tumbler Sublimation Design is a technique of thermal printing on tumblers using pre-designed or custom PNG images. This technique allows to create beautiful, sharp and durable tumblers https://www.etsy.com/listing/1508827420/neon-gradient-tumbler-80s-retro-style

• To make Tumbler Sublimation Design, you need tools such as: sublimation printer, sublimation paper, heat press, tumbler with sublimation coating, thermal tape and suitable PNG images

• You can find many PNG images for Tumbler Sublimation Design on sites like Etsy https://www.etsy.com/market/sublimation_tumbler_designs, The Tumbler Designs or design your own your. You should choose images with high resolution, contrasting colors and matching the size and shape of the tumbler.

• Once you have PNG images, you need to print them to sublimation paper using a sublimation printer. It is recommended that you print in mirror image mode so that when heat pressed, the image will appear in the correct orientation on the tumbler. You should also trim off excess paper to avoid waste and uneven borders

• Next, you need to glue the printed image onto the tumbler with thermal tape. You should align so that the image surrounds the entire tumbler seamlessly and without distortion. You should also seal the edges of the image to prevent peeling during heat pressing.

• Finally, you need to put the tumbler in the heat press and adjust the temperature, pressure and time accordingly. Normally, you should press at a temperature of about 180-200 degrees C, moderate pressure and about 5-10 minutes. After pressing, you should let the tumbler cool down before removing it from the machine and removing the sublimation paper 

Those are the basic steps to make Tumbler Sublimation Design. You can check out more detailed video tutorials on YouTube or sublimation blogs for more tips and experiences. Hope this article will help you to have a good and interesting blog post about Tumbler Sublimation Design.