What's the difference between ceramic and plastic watercolor palettes?+
Plastic surfaces cause paint to bead up into domes rather than spreading flat. You end up chasing puddles with your brush instead of painting. Ceramic and glazed porcelain have a surface energy that lets watercolor spread flat from the first stroke. The difference is obvious the first time you switch.
Are ceramic palettes fragile?+
Glazed metal palettes (like the Holbein tin) are very durable. True fired porcelain tiles will crack if dropped. The tradeoff for the porcelain surface is worth it for studio use — just don't travel with them. For travel with a ceramic surface, the Holbein tin is the answer.
Can I clean dried paint off a ceramic palette?+
Yes, easily. Soak it in water for 20 minutes and most paint wipes off with a damp cloth. Staining colors (Phthalo Blue, Quinacridone Magenta) may leave a faint tint that doesn't affect performance. For full restoration, a few minutes with a soft brush under running water does it.
Is the Holbein tin actually ceramic or just coated?+
The Holbein set's wells are ceramic-coated metal. Not fired porcelain, but the coating functions identically in practice — I've never had paint bead on it. True fired porcelain (like the Jack Richeson tile) has a slightly nicer surface, but you'd only notice it in a direct comparison.