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  1. #1
    rendoman's Avatar
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    Metal polishing advice

    Hi all!

    I'm finishing my belt sander, with an attachment for polishing.
    I'm wondering what I have to buy, I need to make a very shiny and good surface on aluminum, brass and steel.

    I found:

    Disc:
    - cotton soft
    - cotton lined
    - cotton\sisal

    Paste:
    - White roughing ( i have already )
    - Blue buffing , 2nd passage
    - Pink polishing alu and brass
    - Green (only for stainless?)
    - Brown scratch removing gold silver

    My question is: which paste should I buy? I think all 4, maybe the green is not useful?
    Second big question, it's necessary one cotton disc for each paste or it's possible to mix the pastes on one disc?


    DISCO RUOTA in COTONE CUCITO TRAPUNTATO per LUCIDATURA di ACCIAIO INOX OTTONE | eBay

    PASTA ABRASIVA : LUCIDATURA A SPECCHIO METALLI ACCIAIO INOX OTTONE | eBay

    Metal polishing advice-%24_57.jpg Metal polishing advice-%24_57d.jpg

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  3. #2
    olderdan's Avatar
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    Hi rendoman
    Best advice is to download from Plating Kits Electroplating Kits Aluminum Anodizing Kits Gas Tank Sealer Metal Polishing And Buffing Supplies - Caswell Inc a free PDF guide to all metal finishing.
    If you are serious about it I would beware of cheap products as they have not worked well for me in the past.
    Golden rules are one wheel for one abrasive (never mix), and keep in bags when stored, I do a lot of restoration work and have learned the hard way. Good luck with it, a couple of examples of what can be done.Metal polishing advice-imgp0048.jpgMetal polishing advice-imgp0053.jpg

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  5. #3
    rendoman's Avatar
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    Thank you very much olderdan!
    This site is really useful and well equipped of item. I noticed some differences between colour of paste, a black and brown before the white.
    This ebay seller should be fine for products (i hope), I tend to avoid shipping from US because of costs and custom, it's 30% more or less. It's the best quality found yet (in italian sites). In hardware store, here, it's a big shot find something for polishing, they have only small brush kit for drill and 2 tiny pastes,nothing professional.
    You are a maestro of polishing! The result in picture is wonderful!
    I will keep in mind the advices! it's time to read the manual

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  7. #4
    olderdan's Avatar
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    Glad to be of help, ebay is fine if you can find branded products, the problem with some cheap ones is that fat/grease is cheap but abrasives are not so guess which you will get more of.
    I use Hollison Supply in the UK (dislaimer) which is bovine free which I prefer.

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  9. #5
    Hans Pearson's Avatar
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    I remember from very long ago that one should not mix metals being polished. The reason escapes me now but it definitely includes that buffs used for brass should not be used on other metals

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  11. #6
    olderdan's Avatar
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    In an ideal world Hans you are correct but at a hobby level we sometimes make do with what we have.
    For first stage buffing I use a treated sisal wheel with black emery fast cutting, this wheel does not care which metal is being worked.
    After that wheels should be separated for ferrous and non ferrous metals, wheels become loaded with particles which are not compatible, regular raking (old hacksaw blade in my case) is needed to clean before re-charging with media.
    This is as far as I go with protocol but works for me.

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  13. #7
    mklotz mklotz's Avatar
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    Once you get it polished, you'll want to do something to protect that hard-won, lovely shine. Paste car wax works but tends to darken over time and isn't terribly resistant to handling. The professionals in museums use Renaissance wax...

    https://www.amazon.com/Renaissance-W...ance+wax&psc=1

    Although a bit pricey, I bought a small container and used it on the Bowie knife I constructed*...





    This knife lies out on a bookcase and is picked up and handled by nearly everyone who comes into my office. Despite that the shine has lasted for years with virtually no sign of yellowing while another knife, protected with car wax, lying next to it has needed to be repolished several times.

    ----
    * I didn't make the blade. It was made in postwar Germany by destitute Germans to sell to GIs for cigarettes, chocolate, coffee and other essentials. The story is it's made from shrapnel left over from bombings and shellings but I have no proof of that. The bolster, scales and pommel (rear bolster) were made by me.


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