We got invited to an Asian New Year’s party and had some spare ceramic tiles…
Happy Tết.
I used white ceramic tile from Home Depot. Settings were 600 / full / 270 lpi (although speeding it up to 900 probably won’t make too much difference). I then used a Craft Smart wide line permanent marker from Michaels over the whole tile, which seems to provide a more uniform coating than Sharpies. After it dried, I wiped the tile with a VERY SLIGHTLY water-dampened paper towel over the tile, followed by a dry towel. Water seems to keep the color saturation much better in the porous ceramic than using any other solvent. You can use a small amount of alcohol as a cleanup over the glaze, so long as you avoid the exposed porous ceramic. The marker is similar to the one in the following link (but in red): Paint Markers | Michaels
Is there quite a bit of flame when you engrave these? I tried to do a tiny ceramic bowl but the flame was much larger than I expected and I panicked and canceled the print. It wasn’t as high as the print box but MUCH more pronounced than with wood or acrylic.
I didn’t in this case, but you could always spray them with a clear spray after coloring them to keep the color water resistant. For example, if you are making slate coasters, you should spray the coasters with clear acrylic spray before and after engraving.