I have always just soaked pallettes in hot soapy water for a long
time and had no problem pulling the plastic acrylic off.
Christi Fennell wrote: > > I recently acquired some nice 10 well Dick Blick plastic palettes. > The problem is that they were never cleaned or scraped off. There are > layers of coated on Acrylic paint. I have cleaned some by picked the > paint off, but it is taking too long. Will mineral spirits work? I > am afraid to use paint thinner since they are made of plastic. Any > ideas? C.