Martha Stewart Crafts™ Marbleized Glass Tumblers
- Martha Stewart Crafts™ Transparent Glass Paint, Gloss – Bluebonnet, Bright Sky, Meringue and Crystal Clear
- Martha Stewart Crafts™ Fill Medium (with Empty Refillable Bottle)
- Martha Stewart Crafts™ Stencil Tape
- Paper Cups (or Bowls)
- Rubbing Alcohol
- Glass Tumblers
Step 1 Prepare tumblers by washing in warm soapy water; when dry, wipe with rubbing alcohol to remove any residue. When dry, tape off an area 1" from the lip of the glass to ensure food-safety.
Step 2 A marbleized surface is achieved by allowing paints of different colors to flow together and “marble” on the surface being painted. To get paint to a flowing consistency, squeeze a generous amount of one Gloss Transparent paint color into a bowl or paper cup.
Step 3 Add a 1:1 proportion of Fill Medium to the paint in the cup.
Step 4 Mix the two liquids together, stirring gently to prevent bubbles. Stir until completely mixed; the paint should coat your spoon, but still pour easily. Repeat with all the remaining colors.
Step 5 Either pour the mixture into the empty refillable bottle for ease of application, or work with a spoon straight from your mixing vessel as follows:
Step 6 Using a color of your choice, squeeze from bottle and pour directly onto the tumbler in sections of varying sizes, turning the glass as you work and alternating colors to achieve the desired marbleized effect.
Step 7 Once your tumbler is completely coated with paint, continue to rotate the glass to move the paint and allow it to marble naturally. If you have any bubbles, simply pop them with a needle or pin.
Step 8 Set your wet piece on an elevated surface, such as the paint bottle cap, and allow it to dry for several hours. The glass looks very opaque when it is wet, but will be transparent when completely dry.
Step 9 Once the tumbler is completely dry, run a craft knife along the edge of the tape to release it and along the bottom of the glass to clean up any edges.
Step 10 All glass paint projects should be cured for durability. Either let projects air cure for 21 days or oven cure. Place a dry painted tumbler in a cold oven; set the oven to 350° and bake for 30 minutes. Turn off the oven and let the project cool in the oven.