Auto Glass Scratch Repair

In addition to the auto polish kit, you will need a right angle drill or similar power tool that allows you to set the RPM. The manufacturer of the kit recommends polishing tool RPM not exceed 1500 RPM to prevent overheating of the glass.

I purchased a Hitachi D10YB right angle drill for this purpose. You can read my review of the Hitachi D10YB Right Angle Drill Here.

Next mix a batch of polish. I use a small disposable wax coated bathroom cup and a popsicle stick to add polish to the cup and for mixing. I start with about two small scoops of polish. A little water goes a long way.

You polish mixture should not be overly thick or thin. If it's too thick it will make the polishing tool work harder and dry out faster. If the mixture is too thin, droplets of polish will get sprayed everywhere, and polishing performance may be reduced. Add drops of water as needed to the polish mixture on the glass while you work to prevent it from getting too dry.

Set the drill (or other polisher) to 1500 RPM or less. Polish small areas at a time. Deeper scratches may require more focused attention. For the best results, you will need to polish the same area several times (or more). Be sure NOT to apply too much pressure or stop moving the polisher tool as you may overheat the glass which could cause severe problems, such as permanent glass fogging.

When you are finished for the day, be sure to clean the felt polisher with some running water and an old toothbrush. Let air dry for several days before storing.

After about 4 hours of continuous polishing (I had a lot of scratches), some of the deepest scratches in the windshield were not removed completely, but were reduced in size to the point that I no longer notice them while driving. The polish did a very good job eliminating other smaller scratches that were previously very visable and distracting.

The cost to remove scratches from my windshield was about $40 (glass polish kit).