DIY Tumbler Tutorial - Sanding for Smooth Finish after glitter Epoxy - YouTube
Amazon.com: Epoxy Tumblers Kit with Glitter for Tumblers, Includes Clear Cast Epoxy for Tumblers, Silicone Epoxy Resin Brush, Glitter for Tumblers and Other Epoxy Tumbler Supplies : Arts, Crafts & Sewing
Amazon.com: Silicon Epoxy Brushes Set for Making Epoxy Glitter Tumblers, Reusable Flexible Epoxy Application Sticks for Spreading an Even Coat of Epoxy Resin on Tumblers and Cups (Pack of 4)