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Scratched glass port


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#1 Minkyd

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Posted 05 May 2013 - 05:42 PM

Is there any possible way to remove scratches from a glass port?  Unfortunately mine has rather large scratches after many years of use.



#2 MortenHansen

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Posted 06 May 2013 - 12:42 AM

Hi there,

 

As far as I know I think the only way to get rid of those scratches is to get yourself a new dome :( 

 

Are the scratches visible in your images?



#3 ChrigelKarrer

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Posted 06 May 2013 - 05:33 AM

Some manufacturers offer to change only the glass for a discounted price.

Ask your provider!

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#4 DiverPam

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Posted 06 May 2013 - 04:12 PM

Novus sells a polish that works fairly well.  I got this tip from another photographer while on  a trip. I used it on some scratches on my ports and it worked nicely.  When I got home I bought some to keep.  The container has a web address of www.novuspolish.com.

 

Hope this helps - DiverPam 


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#5 okuma

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Posted 06 May 2013 - 05:32 PM

Cerium oxide will polish glass.

It is much, more difficult than polishing plastic domes.

 

First try Photoshop!

 

If not; go for a replacement.


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#6 Minkyd

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Posted 07 May 2013 - 12:44 AM

Thanks for your responses, confirms what I thought, I will have to purchase a new port.



#7 NWDiver

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Posted 07 May 2013 - 05:17 AM

I had a Super Dome, $1200 that had a serious scratch, dead center.  Novus is meant for acrylic domes but thought "what the heck" the port is trashed as is.  Went to the Auto store and bought a foam car polisher that would fit on a hand drill.  So for about $40 and 15-20 minutes of time was able to buff the deep scratch out to the point the dome worked fine.  $1160 saved.  



#8 loftus

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Posted 07 May 2013 - 06:49 AM

I see they have a Light and Heavy Scratch remover - did you start with the heavy and then the light as they recommend for deep scratches, or just one stage?


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#9 jmauricio

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Posted 07 May 2013 - 10:06 AM

What happens to the optical coatings, if any? Are the optical coatings on the domes on the inside?



#10 tdpriest

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Posted 07 May 2013 - 11:35 AM

Went to the Auto store and bought a foam car polisher that would fit on a hand drill.  So for about $40 and 15-20 minutes of time was able to buff the deep scratch out to the point the dome worked fine.  $1160 saved.  

 

Lucky, I guess: if the glass heats up, it will crack...

 

... there's an art to polishing glass, which I've (expensively) not mastered.



#11 DiverPam

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Posted 07 May 2013 - 01:55 PM

I see they have a Light and Heavy Scratch remover - did you start with the heavy and then the light as they recommend for deep scratches, or just one stage?

 

I bought a 3 pack set - do not remember if that was the only way to get it or not when I bought this.  In my set is a fine and a heavy scratch remover/polish bottle. I used the heavy stuff first (had a deeper scratch) and then moved to the fine one.  

 

Pam  


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