How deep of a glass scratch can I remove? The first thing to understand is that depth is usually not the issue. It has more to do with the quantity and length of the scratch, then the actual depths of scratch being removed. The Gforce polishing system allows you to remove most typical production scratches in a relatively short period of time. In addition to that, our new Microforce deep scratch removal disks will enable you to take out deep scratches with relative ease. Between the two, you won’t find many scratches you can’t remove within 15 to 20 minutes. From a technical standpoint, our Gforce polishing system has been proven to remove scratches distortion-free up to four-thousandths of an inch. Which is generally speaking a relatively deep production type scratch, glass on glass, type scratch. Far beyond that of course, could be removed with the Microforce discs, be it in a production setting or in a construction setting. Again, the depth is not the issue; it’s more about the quantity of scratches when it comes to whether or not you want to accept. For situations where the piece of glass has 10, 15, 20, even 30 scratches on it, it may be more feasible just to discard the glass. Once you have decided to remove the glass scratch, the next step would be to determine what method is the right one for the glass damage. The Gforce scratch removal kit comes equipped with both polishing disks and Microforce deep scratch removal disks. A good rule of thumb is to run your fingernail over the glass scratch. If your fingernail can feel the scratch but can pass over the scratch without your getting physically stuck in the scratch, those would be considered light to medium. If when you run your fingernail over the glass scratch, it gets stuck, those would be regarded as medium to heavy damage. For light to medium glass scratch damage, the Gforce polishing disks would work great and would provide you visibly distortion free results. The medium to heavy is where you would most likely want to consider our Microforce disks. Microforce disks, unlike our polishing disks, are an abrasive, meaning you will be removing glass at a much more rapid pace. By doing so, you are bound to be introducing some level of distortion. So be sure to follow our guidelines and training to mitigate distortion to the glass.