I am a fluid artist, so I created coaster blanks using black acrylic. I cut them with the paper backer on the acrylic. Before doing an acrylic pour on the coaster, I peeled the plastic off one side and poured on that side. After the paint dried, I added a clear coat of resin to seal them. After the resin dried, I heated the paper on the bottom briefly with a heat gun, and pulled it off, which pulled off the paper, along with any resin drips for easy cleanup. They can be used just like that, or you can add cork or felt backing. I used cork back, that I cut with my xTool.