Cork sanding blocks are the traditional backing blocks for hand sanding. Cork is just stiff enough so that it can sand efficiently, but has enough give so that minute imperfections and changes in the wood will get sanded too. This not only makes the sanding go a lot faster, but it also means that the entire piece of sandpaper gets used. This sanding block is made of compressed cork. It’s inexpensive and yet one of the most useful sanding blocks available. It can be carved to the shape of various mouldings with ease.