Increasing the thickness of an object can be achieved through various materials and techniques. One common method is using additional layers or coatings to build up the thickness. This can be done through processes such as spraying or dipping the object in the desired material. Another approach is to increase the density of the material itself, either through compaction or adding specific additives. Additionally, utilizing different machining techniques can also help create thicker objects. By understanding the properties of different materials and the application requirements, it is possible to effectively increase the thickness of an object for various purposes.