Laser cut coaster of the Madison skyline

This was a christmas gift for my friends this year. Feel free to remix and share your versions!

- Material: 3mm birch plywood
- Coaster diameter: 3.5 inches

1. As always, test on scrap plywood first! Each machine's laser setting is different.
2. Preset the three colors for cutting, etching, and engraving

(optional: apply polyurethane coat)
3. After cutting, sand it down (also helps remove burn marks)
4. Apply 2-3 layers of polyurethane coating for waterproofing

Source: https://ww