* Access to a laser cutter
* Blank glass coasters (I used Ikea Joker candle dishes)
* Painters tape
* Blank newsprint or butcher paper
Step 1: Design coasters
Start by outlining the coasters with the correct size circle. You may also want to mark out the lip of the coaster as a reference while you're designing. Then create your desired graphic. Reflect the graphic across its center so you can etch onto the back of the coasters and flip them over. After reflecting, double check that your work is still aligned correctly. Finally, copy your work in a grid so you can etch multiple coasters at once.