DIY How To

How to Remove Scratches from Glass

Catch a window or glass door in the right light, and you'll probably see that it's got quite a few scratches in it. Sometimes they're almost unnoticeable, but often they are a source of irritation. Fortunately, it is actually possible to repair minor damage; you don't need to replace a whole pane. While deep cuts would require specialist equipment, hairline scratches can be eliminated using readily available products.

To find out if a scratch is repairable, run your nail over it; if you can feel it, then the scratch is probably too deep. Always bear in mind also that this method may not be suited to conspicuous areas, because the glass where you polish will likely be noticeably different to the rest.

What equipment you will need

Here's a quick guide to removing those scratches that are repairable.
You'll need:

Safety gear
• Goggles
• Dust mask
• Rubber gloves

Liquids
• 250ml warm water
• 15ml ammonia
• Cerium oxide / jeweller's rouge / whitening toothpaste

Equipment
• Spray bottle
• Buffer
• Polishing pad
• Paper towel

Step 1
Prepare the area by making sure the glass is clean. Ideally you'll need to place the glass flat, but this may not always be possible. Either way, you should make sure that the area you're working on is secure, and that you're not putting yourself or the glass at risk. Things like frameless glass curtains are probably best left to a professional.

Step 2
Put on your rubber gloves, apply the cerium oxide (jeweller's rouge is also useful) or the toothpaste to the polishing pad, and attach to the buffer. If you're using toothpaste, it should be a whitening type, and not a gel.

Step 3
Put on the dust mask and safety goggles. Using the electric buffer on a low speed setting, begin to buff away at the scratch. It's very important that you don't press too hard or use the buffer too harshly, or you risk breaking the glass.

Step 4
Put the ammonia in the spray bottle, along with the warm water. Spray the area with the solution, and then wipe away with the paper towels.

Step 5
Assess the scratch and glass surface carefully, by looking at it from different angles. You may need to repeat steps three and four a few times, but be aware that if the scratch remains, it may simply not be repairable.

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