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Tumbling and adding Mothers aluminum mag polish

Discussion in 'Handloading and Reloading' started by Gottcha, Mar 20, 2017.

  1. Gottcha

    Gottcha Member

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    I tried searching and found some hits but nothing that really said it was bad other than it might turn the media black so I tried a bit and compared it to some previously tumbled brass which I only used corn cob media and a bit of car wax. The results were great if you want really shinny brass! This was the best picture I could take to show the difference. I came up with this idea when I made a couple of bullet necklaces and polished them with my dremel tool. brass mothers.jpg Mothers aluminum.jpg
     
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  2. bfoosh006

    bfoosh006 Member

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    Try NuFinish.

    Cheaper, and doesn't oxidize quickly...
     
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  3. AZAndy
    • Contributing Member

    AZAndy Member

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    Yep, that's the stuff!
     
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  4. JeffG

    JeffG Member

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    Been using Mother's and Brasso with corncob media for years.
     
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  5. Tinybob

    Tinybob Member

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    Turtle Wax polishing compound?
     
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  6. Orcon

    Orcon Member

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    Yeah, I tried nufinish after hearing about how great it was and the horrors (horrors, I tell you) of using brasso. I was not impressed, the parts that were already clean were pretty shiny but the necks and shoulders took forever to get clean. Not to mention my media seemed to foul much faster. Needless to say, I'm using brasso again.
     
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  7. ColtPythonElite

    ColtPythonElite Member

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    NuFinish always gives me excellent results.
     
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  8. Walkalong

    Walkalong Moderator

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    Yep. It does take more than an hour or two though. Wet tumbling is faster.

    Here is some brass done in corncob and either Nu Finish or Midway polish, I don't remember, but they both work the same.
    [​IMG]
     

    Attached Files:

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  9. Orcon

    Orcon Member

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    Show off. :p
     
  10. Johnnyd

    Johnnyd Member

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    I use that to smooth out gritty triggers.

    I use NuFinish, Turtle wax finish restorer or Flitz media additive in my tumbler.
     
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  11. Dudedog

    Dudedog Contributing Member

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    When I am using corncob I like Flitz, takes a bit but a nice shine.
     
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  12. Tinybob

    Tinybob Member

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    IMG_20170320_135548970.jpg I IMG_20170320_135548970.jpg IMG_20170320_135714920.jpg repurposed a rubber drum rock tumbler for wet tumbling with stainless steel pin media. It works pretty good.
     
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  13. grandpawj

    grandpawj Member

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    I do like shiney!
     
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  14. dh1633pm

    dh1633pm Member

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    Excellent results. I stopped worrying about shiny and became satisfied with clean. Results like these put me to shame.
     
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  15. pert near

    pert near Member

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    I tumble my range brass with SS pins/Lemi/dish-soap & they come out super shiny. But after an over-night drying they already start to tarnish & lose that yellow glint & turn slightly amber. Is there some type of additive that keeps the shine?

    Yeah, I know clean is clean & the shine doesn't really matter.
     
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  16. CrankyCraig

    CrankyCraig Member

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    Try 2-3 Tbsp of a decent wash n wax like armorall in place of the dish soap and you will see better results. It leaves a protective film on the brass. & it won't look like crap overnight if at all.
     
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  17. Blue68f100

    Blue68f100 Member

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    I would not use Brasso for cartridge brass. It will attack the zinc in the brass and weakened it. Any thing with ammonia in it will attack the zinc. Called inner-granular corrosion.
     
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  18. grandpawj

    grandpawj Member

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    Don't laugh but here is what I do for brass prep. 1.) deprime and tumble with SS pins,(swage if primers crimped in) 2.) resize and trim, 3.) put in vibrator with corn cob and Nu-Finish, then proceed with reloading. Yep do the same with handgun rounds except don't trim.
     
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  19. Gottcha

    Gottcha Member

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    I'm going to let my cases sit out for awhile and see if they start to dull. The media already had a liquid car wax added to it along with the polish so we will see what happens.
     
  20. Orcon

    Orcon Member

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    Copper. It attacks the copper. Ammonia and copper bond to form cuprammonium [Cu(NH3)4]2+. If you're putting enough brasso in your media to cause this to happen, you're doing it wrong. One bottle of brasso will last me over a year and I shoot nearly 8 pounds of powder per year.


    This is how rummors start. All this hubbub about brasso comes from a single source regarding Brits in India storing their ammo (with un-annealed brass) in horse stables for months at a time.
     
    Last edited: Mar 21, 2017
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  21. dh1633pm

    dh1633pm Member

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    So the legend of brasso brass destruction/zinc corrosion is false Mr Orcon? No harm/no foul as long as like alcohol consumption, it is done in moderation?

    I have heard that one since forever.
     
  22. Orcon

    Orcon Member

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    There's a lot of half truths and misunderstanding about the subject. Brass is a substitutional alloy (either atom can take a place withing the crystal matrix) made of zinc and copper. Copper is a transition metal that can accommodate a lot of electrons so it sucks up an electron from Ammonia which then destabilize the Zn-Cu structure.

    When brass is subjected to ammonia, it begins to ionize the copper. This changes the alloy compozition to be zinc rich. Zinc is harder, your brass becomes more brittle. Not unlike playing janga, the players are the ammonia and the blocks they remove are the copper. Eventually the structure becomes physically unstable.


    The conditions in which the fabled season cracking occurred were pretty extreme. I think that the hour it takes to clean your brass is not enough to cause any damage.
     
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  23. TheDomFather

    TheDomFather Member

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    Cool how much of that did you put in?
     
  24. Gottcha

    Gottcha Member

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    1/2 to a full teaspoon.
     
  25. TheDomFather

    TheDomFather Member

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    While I use a frankford arsenal vibratory tumbler with corn cob media and their polish it works very well and was very cost effective. The best I have seen comes from the wet tumblers with stainless steel media with a little dawn and lemi-shine, this seems to consistenly produce the best results and also cleans inside and outside as well as the primer pockets. I tumble mine with the spent primers in so I dont have to pick out the media however, I usually clean the primer pockets separately. Most people on here will tell you cleaning primer pockets in pistol brass is a waste of time but I usually do it anyway. Whatever works!
     
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