Sandpaper is a very common coated abrasive. The finer polishing is done with abrasive paper. A grinding wheel is an expendable wheel used for various grinding and abrasive machining operations. Powder coating can also be removed with abrasive blasting. This process involves physically scrubbing the skin with an abrasive. Historically, jewel pivots were made by grinding using diamond abrasive. Silica sand can be used as a type of mineral abrasive. Hydrated silica is used in toothpaste as a hard abrasive to remove tooth plaque. Automated blasting is simply the automation of the abrasive blasting process. Diamond dust used as an abrasive can be harmful if ingested or inhaled. The most common abrasive used is aluminium oxide. Different adhesives are used to bond the abrasive to the paper. Dry ice will sublimate leaving behind no residual abrasive. Some glass cleaners also contain a fine, mild abrasive. Baking soda is a safe, low abrasive, and effective stain removal and tooth whitening toothpaste.