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Old 06-26-2015, 06:47 PM   #1
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Corian Countertop Repolishing - Need Advice!

My Corian countertop has some scratches. It is dark and has a shiny finish, see attached photo.
I did some search on line and decided to re-polish it. I ordered the following scratch pads: 120, 140, 180. 320, 380, 500, 600, 800, 1000 and 1,500 grits. I'm working on the left hand side sink cover, and started with 120 grit and worked my way to 1,500, but the end result is what you see in the picture, not nearly as shiny as the old finish. I'm using a 5" orbital sander.
Please tell me if I I did anything wrong, or do I need to go to finer grits yet?
Thank you, in advance, for your help!
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Old 06-26-2015, 07:38 PM   #2
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Automotive rubbing then polishing compound followed by maybe chrome or glass polish.
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Old 06-26-2015, 07:59 PM   #3
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Originally Posted by TQ60 View Post
Automotive rubbing then polishing compound followed by maybe chrome or glass polish.
Is this the same as wax, or "rubbing" is something different?
Thanks
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Old 06-26-2015, 08:34 PM   #4
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I would use some 3m polishing compound which should bring most of the shine back. Orbital polishers usually don't work that well with compound so you may need to get a circular polisher to get it done.
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Old 06-26-2015, 09:04 PM   #5
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According to corians web site they go as high as 12000 grit to achieve a high gloss finish. Maybe polishing compound or buffing polish would work.


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Old 06-26-2015, 11:02 PM   #6
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I hired someone to do mine. Came out beautiful. If you are near Junction City Kevin Waite can do it.
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Old 06-27-2015, 12:03 AM   #7
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srh,
I have a Corian topped island in my home that was getting scratches and lost it's shine. I used Flitz and a rotary car buffer to restore it to near new in about half an hour. I went the same route you chose, using progressively finer grits to remove the scratches first...about 45 min. In a little over an hour it was done. It gets an annual buffing now to maintain the shine. Just a thought...Good Luck!
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Old 06-27-2015, 06:58 AM   #8
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I hired someone to do mine. Came out beautiful. If you are near Junction City Kevin Waite can do it.
No, I'm not near there, but will seek his advice.
Thanks
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Old 06-27-2015, 07:28 AM   #9
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srh,
I have a Corian topped island in my home that was getting scratches and lost it's shine. I used Flitz and a rotary car buffer to restore it to near new in about half an hour. I went the same route you chose, using progressively finer grits to remove the scratches first...about 45 min. In a little over an hour it was done. It gets an annual buffing now to maintain the shine. Just a thought...Good Luck!
Thanks - that is very helpful!
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Old 06-27-2015, 12:00 PM   #10
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I like the 3M Perfect-It polishes.

High Performance Compounds & Polishes - Compounds, Polishes, Glazes - Products

I believe rubbing compound with a wool pad is similar in abrasive as 1200 grit wet/dry sand paper.

More scratches might be removed by continued wet sanding with 2000 then 2500 grit sand paper. (that might have been the only sanding needed in the first place?)

So if the scratches are removed perhaps you are ready for the polishing steps.

If the polished product is not scratch free, you can always go back to the sanding step or rubbing compound.

A rotary polisher with appropriate foam pad will likely be needed rather than an orbital buffer for the fine polish applications.
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Old 06-27-2015, 01:29 PM   #11
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Originally Posted by smlranger View Post
I would use some 3m polishing compound which should bring most of the shine back. Orbital polishers usually don't work that well with compound so you may need to get a circular polisher to get it done.
I used a 5" Makita Circular Orbital sander. The scratches are gone, just trying to to get the shine back. It seems like I have some good suggestions to try.
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Old 06-27-2015, 01:35 PM   #12
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Originally Posted by deandec View Post
I like the 3M Perfect-It polishes.

High Performance Compounds & Polishes - Compounds, Polishes, Glazes - Products

I believe rubbing compound with a wool pad is similar in abrasive as 1200 grit wet/dry sand paper.

More scratches might be removed by continued wet sanding with 2000 then 2500 grit sand paper. (that might have been the only sanding needed in the first place?)
I thought about that, but didn't quite want to tackle it by hand!

So if the scratches are removed perhaps you are ready for the polishing steps.
Yes, I have removed the scratches - just working on the shine!

If the polished product is not scratch free, you can always go back to the sanding step or rubbing compound.

A rotary polisher with appropriate foam pad will likely be needed rather than an orbital buffer for the fine polish applications.
I'm getting one - that is what I do not have. I have a palm buffer, but that didn't quite do the job.
Thanks for the suggestions!
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Old 06-27-2015, 01:45 PM   #13
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Quote:
Originally Posted by srh View Post
My Corian countertop has some scratches. It is dark and has a shiny finish, see attached photo.
I did some search on line and decided to re-polish it. I ordered the following scratch pads: 120, 140, 180. 320, 380, 500, 600, 800, 1000 and 1,500 grits. I'm working on the left hand side sink cover, and started with 120 grit and worked my way to 1,500, but the end result is what you see in the picture, not nearly as shiny as the old finish. I'm using a 5" orbital sander.
Please tell me if I I did anything wrong, or do I need to go to finer grits yet?
Thank you, in advance, for your help!
srh
See: How to Clean and Maintain a Solid Surface Countertop
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Old 06-27-2015, 04:45 PM   #14
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Thanks, mel s: That is a nice read!!
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