Pyro
Joined: 28 Sep 2004
Posts: 406
Location: Johannesburg
|
 Posted: Sat 03 Nov 2007 13h28 Post subject: |
 |
|
Some searching gives this:
| Quote: |
IF it's a glass screen and not a plastic screen, get some Colgate or Gleem toothpaste and a Q-Tip....toothpaste is a mild abrasive and can POLISH the scratch to make it disappear....
Put the toothpaste on the cotton tip, and rub ONLY the scratch back and forth for about 2 to 5 minutes....WIPE it clean and see if it disappeared....
Don't know if it's plastic or glass? Tap it with your finger, feel it with your hand...plastic is NOT cool to the touch when the TV is turned off....glass always feels cooler....
Tapping glass makes a metallic clink, kinda like the sound if you tap the glass computer monitor in front of you...plastic doesn't clink...it's a dull sound.
IF you are NOT SURE, call a TV repairman and let him figure it out....IF you buff plastic You'll make it WORSE! |
| Quote: |
Polishing Scratches Out of Glass
Cerium oxide is the polish of choice for glass. Before you can polish scratches out of glass, you must first determine how deep the scratches are. If you can feel a scratch as you run your fingernail across it, the scratch is too deep to be polished out with cerium oxide. You must first grind the scratch out.
The grit used to grind out the scratch will depend on the depth of the scratch. It is best to use the finest grit you can to grind out a scratch. I suggest starting with 2000 grit. If that is too slow, go to 1500 or 1200 grit and if it is still grinding too slowly, try 600 grit. However, after grinding with 600 grit, you will have to re-grind with 1200/1500 and then again with 2000 grit to remove scratches from the coarser grits. Only then, can the glass be polished with cerium oxide.
An easy way to grind out the scratches is to use silicon carbide sandpaper (the black sandpaper available at hardware stores or auto body shop supply houses) with water as a lubricant. After grinding, carefully clean off the area you ground with water and clean off your tools before going to the next finer grit. It's best to use an attachment on a drill, or an electric buffer.
Mix cerium oxide with water to create a slurry that's the same consistency as milk. Put the slurry on spinning buffing pad. Harder buffing pads made out of hard felt, or leather work best. The polishing action will be fastest when the cerium oxide is damp, but not dry, or runny wet. Fill a spray bottle with water and use it to keep the area you are polishing damp.
Glass is relatively easy to polish. Therefore, you don't need to use the more expensive 99.9% cerium. Instead, the less expensive 90% Optical grade will work fine. |
In the end the guy (Glass plasma) went to a Windscreen repair shop, and they buffed it out 100%.
If you have a plastic screen or an anti-reflective coating, it might be a bit of a problem though.
Good luck, and let us know about the results 
|
|
