Layer multiple underglaze colors

Colors interact. Layering reveals things you can't predict until you test.

The experiment

Create a design using three or more underglaze colors on a tile or pot:

• Apply one color, let it dry completely
• Apply the second color, overlapping in some areas
• Apply the third, overlapping differently

What to observe after firing

• Do overlapping areas create new colors?
• Does the order of application matter?
• Do some colors dominate others?
• Are there any unwanted reactions (crawling, bleeding)?

Document everything

Label your test tiles: "blue over red," "red over blue," etc. These become your permanent reference library.

Every potter's test tile collection is their most valuable possession.