For industrial foam-board printing, white ink is useful when the face color interferes with the artwork, while varnish is an optional surface effect that needs its own approval. White paper-faced board often needs neither. Choose the construction from the board...
White ink and varnish on leather should be planned around the material’s background color, surface finish and movement in the finished product. For a dark leather panel, a white underbase followed by color is a useful starting point. Clear varnish...