Terms of the Trade: What Is a Shim? Terms of the Trade: What Is a Shim?
When working on a DIY project, you may find that sometimes all you need is a shim as the final touch. Simply put, it's a small piece of wood, cardboard, metal, or other material that fills in space to offer leveling, support, or adjustment. The most common example of this is when you need to correct a wobbly table or armchair—a shim is the small piece of something wedged between the floor and the bottom of the offending piece of furniture to make it stable.