Pennsic block printing haul - follow up

Remember my block printing haul from Joann's? I've started experimenting with them. The blocks are carved wood with the print surface sealed in a white (oil?) based paint. I had assumed this was the make the carving on the block easier to see for potential buyers but now I've experimented, I can see this has an interesting application. The white paints stops the wood from absorbing any of the paint so it doesn't dry out too quickly. Only a certain amount of paint will adhere to the shiny block reducing buildup concerns. Additionally, with my paintbrush-paint application method, paint collects around the edges of the block resulting in a darker outline for the shape. It could be quite effective if utilised properly.

 

Experimenting with design layout.