I bought a gwa1000 from wus awhile ago at a good price because of a scratch on the glass (one long scratch and a couple chip marks). It was difficult to see in most light but when I could see it, was so blatantly obvious. What made it worse was , it usually happened while I was at my desk at work so of course id see that scratch many times a day, even out of the corner of my eye I could feel it mocking me! Haha it was deep enough to catch my nail on it so I decided to see what I could do about getting rid of it.
I did some searching originally and found a few posts here and there and a few mentions of “don’t do it, itll end in tears!” but I thought id give it a try anyway. Yolo.
The best comment I found was to use diamond paste, something coarse (30) to cut down to the bottom of the scratch and something fine (.3) to polish afterwards. So I jumped on ebay and ordered some, just went with the cheapest option. It took weeks to arrive so in the meantime I gave a couple other things a try knowing theyd probably have little effect.
Toothpaste - left it to dry till it was almost hard but all it did was make my watch smell minty
Car polish – polishing compound, rubbing compound and cutting compound. Basically just varying degrees of coarseness. Did nothing, but possibly did give it a nicer shine.
Diamond paste finally arrived, it comes in little syringes which makes it very easy to apply. Medium is oil which helps to keep the friction and temperature down while polishing. I found leaving it for 5min before polishing helped it dry out a little so it didn’t spray around so much. (see bottom of the second image!)
Heres a pic of the scratch, it runs across the function markers and sub dial, also noticed a couple little chips towards the date window.
I used a rotary tool (aka dremel, mines a cheap knock off but it has the all important low rpm setting) with a pointed polishing tip and made anticlockwise circles while slowly turning the watch clockwise. Found this helped to keep the paste centered around the buffer and give it a more even “sanding”. I was still a little nervous about doing it so took regular breaks wiping up the paste and checking the progress. It’s a slow process but im glad it was, def. help keep it to only cutting down to the scratch and not any deeper than necessary.
I had no need to rush it so did it over a couple days, accumulated polishing time would probably be about 20-30min all up, doing batches of a couple minutes each time. got down to where the scratch was a fine ghosting line and the couple little chip marks were lost in shadow but by the time I ran the fine paste over that, the whole thing was gone :D
The paste itself goes a very long way, I scraped it off to check the progress then reapplied. Only needed about 10 little dabs all up
All that’s left now is a couple very faint buff marks that can only be seen at acute angles under very specific lighting which was pretty close to impossible to photograph. I might remove the bezel and run the cutting compound over the whole glass one day to give it a proper “clean”. The glass however looks immaculate otherwise
Nb: this is for mineral glass, any other glass or acrylic will of course have much different results!