I'm assuming you're referring to a type of wood or material. "Japanese shemal" doesn't appear to be a widely recognized term. However, I think you might be referring to "Shimal" or more likely "Shou Sugi Ban" (also known as Yakisugi), which is a traditional Japanese technique of charring wood to preserve it.

If you're looking for information on a specific type of wood or material, could you please provide more context or clarify what you mean by "solid piece"? Are you referring to a type of wood, a product, or something else? I'll do my best to help.