Removing physical blemishes from CRT?

From: Dwight K. Elvey <dwight.elvey_at_amd.com>
Date: Mon Apr 12 21:35:29 2004

>From: "Vintage Computer Festival" <vcf_at_siconic.com>
>
>
>Although the CRT in question is off-topic, the question is fairly topical:
>
>Is there any way to remove physical blemishes from the face of a CRT?
>I've got a very nice 19" SVGA display that has some scratches on the face.
>They are somewhat invisible unless you happen to be looking at something
>at that part of the screen (lower third, right of center).
>
>Can this be buffed out or ... ?
>
>I hope there's a way to do this because I've been wanting to fix the face
>of my 35" ProScan TV that has the same problem. You barely notice it, but
>it is slightly distracting when you do.
>
>--
>
>Sellam Ismail Vintage Computer Festival

Hi Sellam
 It takes quite a bit of elbow grease but yes, it can be done.
Usually you use some 10 to 20 micron aluminum oxide to fine
grind until you are past the scratch. Then you use rouge or
cerium oxide to polish. It is a process similar to what we do
to make a telescope mirror.
Dwight
Received on Mon Apr 12 2004 - 21:35:29 BST