Topic: instrument lense

[bwaller]

I have an instrument lense that has a haze like ring around 2/3 of the perimeter that is probably from the rubber seal. It is on the outside of the lense, which I believe is glass. Otherwise it is perfect and I'd like to reuse it. I've tried lots of witches brews to no avail! Has anyone ever been able to remove this? 

Thanks,  Brent

[ProTeal55]

I would try an automotive clear plastic cleaner, available at most
higher end auto part stores. I believe the brand I used to use
was made by Mothers.

[bwaller]

I have let soak in CLR, which is a mild acid, chlorine, no change to date. It doesn't appear to be etched, but tough to say for sure.

[8 Track]

How do you know it's not on the inside?  I took my gauges apart to clean them and it wasn't that bad.  (Better than a poke in the eye with a sharp stick).  It is glass.

[bwaller]

I have the lense in my hand and on the outer side I can feel a slight roughness with my thumbnail, but again I believe it's on the surface and not that the glass is etched.

Brent

[8 Track]

You can try 00000 steel wool on the glass. (5 "ought" steel wool, very fine)  Shouldn't scratch it (just don't bore down on it) and that will answer the question if it's overspray, or some coating.

[Dennis]

I have the lense in my hand and on the outer side I can feel a slight roughness with my thumbnail, but again I believe it's on the surface .......

Brent

I'd try polishing (not rubbing) compound.

[grumburg]

Kit Scratch Out works for me. But would take off most of it with the steel wool. Took wiper scratches out of my MGB with this combo.

[8 Track]

I have the lense in my hand and on the outer side I can feel a slight roughness with my thumbnail, but again I believe it's on the surface .......

Brent

I'd try polishing (not rubbing) compound.

Watered down regular toothpaste works good, too.  Water it down and don't push too hard.

[ElCheapo]

There was this stuff () dont know what it was but I know the sold it on TV for a bit and I bought a few tibs a long time ago that clean up scratches in plastic, polymer, and glass. Worked good enough for camera lenses. Just rub it on and rub it off.

[cbjunkie]

glasshoppa!

[ElCheapo]

When in doubt load her in the trebuchet  Ok now I'm getting obnoxious 

[8 Track]

There was this stuff () dont know what it was but I know the sold it on TV for a bit and I bought a few tibs a long time ago that clean up scratches in plastic, polymer, and glass. Worked good enough for camera lenses. Just rub it on and rub it off.

Simichrome polish?

[ProTeal55]

Simichrome polish is meant for alum. or chrome. I would think , due to the thickness, that it might be
too corse for use on glass...

[bwaller]

Thanks for the help guys, I'll try the toothpaste first then maybe a windshield repair shop or even an eyeglass outlet to try polishing.

[8 Track]

Simichrome polish is meant for alum. or chrome. I would think , due to the thickness, that it might be
too corse for use on glass...

Now that you mention it, I would definetely test it first!