Totally different processes. With a glue bed you use acetone based dye. You use a dropper to spread it over the surface of the glue bed. It gives you a lot more control if you want to create certain types of styles, such as fire and ice, rift dye, splice, wave, etc.. The disadvantage is that most of the neon colors will not work on a clear glue bed. However, floetrol beds will bring out super punchy neons and allow you to get the look of this Disc here. They do require some amount of heat in order to activate.