Thermographic powders are made from plastic resins which were introduced in the 1970's. They have taken the place of resin materials that were traditionally manufactured with a base made from ground tree sap. There are a wide range of thermographic powders available that produce an endless variety of effects. The powders come in many particle sizes to suit any application. A choice of finishes, such as gloss, semi-gloss, semi-dull, and matte are also available.