Although Embossing and Debossing are very similar printing processes, they create a different result. Both of these processes involve pressing paper into relief using heat and force. The process involves the use of two metal dies, a raised counter-die and a recessed die. The raised die forces the paper stock into the recessed die to create the impression. Embossing creates a raised impression and debossing creates a depressed impression.
There are a couple of things you need to remember when designing for a piece that includes embossing or debossing:
Set your type with more space between the letters than usual. When putting letters too close to one another it will merge the letters to for one element once the embossing has been done. Embossing also makes design elements look smaller and can reduce the clarity of smaller items.
Be aware that embossing is a mechanical process that manipulates the paper stock, and by default, it may also manipulate your design.
Ink, foil, paper stock, and die are key elements to creating an embossed or debossed product. Given the number of variables, it is best to consult with a knowledgeable Color Trade Print representative to ensure that you are ordering exactly what you need.