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aluminium blotchs

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  • aluminium blotchs

    I have sanded using 80 grit, 320, 600, 1500, 3000 and then polished with a few different rolite compounds and in the end I have a blotchy finish. This is my first time. I chose my 20' boat as a first project. What a huge job. How do I make it like glass?

  • #2
    Re: aluminium blotchs

    if thats the exact grit pattern plan you used then you need to redo it all again. you need to start at a certain grit like 180 and work up one grit at a time, going from 80 to 300 just aint going to work, dont jump more than 100 grit at a time. so 180, 240, 320, 400, could use 600 but might not need it but some do.
    http://img.photobucket.com/albums/v4...ed-1copy-1.jpg

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    • #3
      Re: aluminium blotchs

      Polishing metal is simply creating progressively finer scratches in the finish until you end up with scratches so fine that they don't disturb the reflection of the light. Each grit of abrasive you use must (I repeat: MUST) remove all of the scratches left by the previous grit. If you don't do that, what you get are polished scratches, the finer of which hold residual buffing compound and give you a hazy or blotchy look.

      Tng21 said it right.

      You're right. Polishing a 20 foot boat is a huge project. Polishing is a lot more work than people imagine.

      Richard

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      • #4
        Re: aluminium blotchs

        карта кемерова nationshistory гжель

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        • #5
          Re: aluminium blotchs

          i agree 100% to what tng21 and Richard said.
          choosing a 20 foot boat as a first project could turn out to be a nightmare .
          http://www.peintureenpoudrepb.com
          http://www.polissagepb.com
          http://www.powdercoatpb.com
          baz

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