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Open Roads Forum  >  General RVing Issues

 > Polishing diamond plate

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Blazing Zippers

North Idaho

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Posted: 03/31/19 09:38am Link  |  Quote  |  Print  |  Notify Moderator

Our new trailer has diamond plate on the front. It got "etched" or marked by the ice melt used this winter on the highway. Have any of you polished the diamond plate, and if so, what did you use? I've thrown everything I've got in the house at this--no result.
A side note; I used Rustolieum gel in a squirt bottle (from HD) to remove the surface rust from the frame. I have to say that it worked quite well. The lug nuts were rusted, so I used a brush to spread the gel around and after power washing a little, all was bright again. Always good to have shiny, well, you know.....

Grit dog

Black Diamond, WA

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Posted: 03/31/19 10:05am Link  |  Quote  |  Print  |  Notify Moderator

Any number of polishes will work fine or similarly. Job will go much quicker with a rotary polisher. Raw Aluminum is tedious and intensive to keep up, but looks so nice when done!


"Yes Sir, Oct 10 1888, Those poor school children froze to death in their tracks. They did not even find them until Spring. Especially hard hit were the ones who had to trek uphill to school both ways, with no shoes." -Bert A.

Latner

Indiana

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Posted: 03/31/19 10:16am Link  |  Quote  |  Print  |  Notify Moderator

After you get it all cleaned up the way you want it, use this:

Sharkhide

Ralph Cramden

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Posted: 03/31/19 10:56am Link  |  Quote  |  Print  |  Notify Moderator

A lot of the "diamond plate" rockguard on newer trailers is actually plastic, not aluminum..........either paluminum or alumastic.

FLY 4 FUN

Alberta

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Posted: 03/31/19 05:28pm Link  |  Quote  |  Print  |  Notify Moderator

once you confirm that its actually metal then you can get one of those rim "balls" that go onto a drill and use metal polish to bring back some of the shine


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ppine

Northern Nevada

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Posted: 04/01/19 07:53am Link  |  Quote  |  Print  |  Notify Moderator

I learned about Alumabrite from the boat guys. Works well, especially on a rough surface you can't put a wheel on.

Blazing Zippers

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Posted: 04/01/19 09:19pm Link  |  Quote  |  Print  |  Notify Moderator

After visiting the auto store, I polished a portion of the diamond plate today. Whatever they used on the highway for ice melt actually etched the metal. I can feel the depression in the finish.
Anyway, it looks better - like a 20/20 job - 20 feet away and 20 miles per hour. Thanks to all that answered.

Grit dog

Black Diamond, WA

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Posted: 04/01/19 10:03pm Link  |  Quote  |  Print  |  Notify Moderator

Latner wrote:

After you get it all cleaned up the way you want it, use this:

Sharkhide


Have you used this stuff? My neighbor did his aluminum boat and it looked great, but idk how it holds up because he never used the boat, lol.
I was going to get some but haven't polished my sled tunnels and trailer diamond plate yet.
Curious how durable it is.

harryjr

SE CT

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Posted: 04/04/19 07:01am Link  |  Quote  |  Print  |  Notify Moderator

This is what we used to use to prep the diamond plate on fire trucks for parade season.

https://www.youtube.com/watch?v=xcBVpMvG........rtCvwiJSGit6lKD5j3pk0uytG2rfG_S6JrJ58p3g

Hope you don't have the same area to do. There is a LOT of diamond plate on a fire truck. It required a lot of junior members.


Harry Jr.
Southeastern CT

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