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Electropolishing and cleaning stainless steel and aluminum

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  • Weston Bye
    replied
    Evan,
    Haven't anything to add, except that I am interested in your outcome working with aluminum.

    Leave a comment:


  • hoof
    replied
    Count me in as intrested, With nothing to add I to will use my refind command of the english language and say nothing at all.

    Hoof

    Leave a comment:


  • lazlo
    replied
    Originally posted by Evan
    The most Fogbuster can do is issue a cease and desist order. They haven't lost any revenue so they can't sue for damages.
    They can sue you for the cost of a FogBuster. By building, and using, the FogBuster described in their patent, you have deprived them of $500 of revenue.

    Very unlikely, but if you have a thread with 30 posts, like we had on PM, where everyone was showing their copy of FogBuster's patent...

    Leave a comment:


  • Evan
    replied
    You may be able to at least remove the burnt tarnish by using a sponge that is tied to a stainless steel "paddle" and connecting the positive to the bike and the negative to the paddle. Saturate the sponge and wipe the sponge slowly over the pipes. Simple tarnish comes off in seconds so far as I have seen to date. I am going out to do some more experimenting shortly and will see how it works on burnt SS.

    I'll be posting the micrographs a bit later too.

    Leave a comment:


  • QSIMDO
    replied
    I may have to see how this would work on the SS exhaust pipes of my bike.
    They were never "polished" to begin with so they've gone beyond the amber that SS turns to and are now just brown.

    Might prove to be difficult to locate a SS container large enough and CHEAP enough to hold pipes though.
    Last edited by QSIMDO; 11-29-2009, 03:52 PM.

    Leave a comment:


  • boslab
    replied
    Originally posted by SDL
    That will give you very shiny scratches. We mirror polish the inside of the UV chambers to 15 µm (16RA") then electropolish, you can see you face like a mirror. The outside we do with 120 grit and it is very bright but full of lines and no reflection.

    The process also increases corrosion resistance.

    Steve Larner
    toilet cleaner in the uk
    mark

    Leave a comment:


  • SDL
    replied
    Originally posted by aboard_epsilon
    thats what i thought ..only capable of taking the peaks off and smoothing the troughs of the scratches ....just the same as using 1000 grit on 100 grit scratches and never really getting anywhere ..because it has to be done stage by stage.

    what final grit gives you 15 µm (16RA") ?

    all the best.markj
    600 then compound from memory

    Steve Larner

    Leave a comment:


  • Peter N
    replied
    Decided to edit this out to avoid thread hijacking
    Last edited by Peter N; 11-29-2009, 03:00 PM.

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  • Evan
    replied
    The most Fogbuster can do is issue a cease and desist order. They haven't lost any revenue so they can't sue for damages.

    At any rate it makes no difference as I am not infringing any patents. I am really surprised that anybody can even get a modern patent on electropolishing. There are so many expired patents that just about any combination of electrolytes and additives are covered. It draws directly from electroplating which goes back to the Babylonians so there is a very large body of prior art.

    Leave a comment:


  • lazlo
    replied
    Originally posted by J Tiers
    Originally posted by Tony Ennis
    More accurately, they are a wealth of information... from which you can't derive income.

    Market the mixture, you have a problem. Use it in your garage, no problem.
    Not at all true. If you derive a benefit from it, i.e. you use it, you have deprived the patent holder of the income he otherwise could have gotten from you (directly or indirectly). Therefore your private use of the patented process or device is exactly equivalent to selling a product based on it with no license, just on a much smaller scale.
    Jerry's right -- according to US patent law, you're allowed to make a copy of a patented device "for instructional purposes" (essentially, to prove that the device actually works), but using the device is patent infringement, even if you're not deriving income from it.

    That's not just hair-splitting for HSM'ers -- when we were crawling through the FogBuster patent on PracticalMachinist, several people posted pictures of the copies they made based on the rec.metalworking analysis of the patent, and they're just asking for trouble from FogBuster...

    Leave a comment:


  • aboard_epsilon
    replied
    Originally posted by SDL
    That will give you very shiny scratches. We mirror polish the inside of the UV chambers to 15 µm (16RA") then electropolish, you can see you face like a mirror. The outside we do with 120 grit and it is very bright but full of lines and no reflection.

    The process also increases corrosion resistance.

    Steve Larner
    thats what i thought ..only capable of taking the peaks off and smoothing the troughs of the scratches ....just the same as using 1000 grit on 100 grit scratches and never really getting anywhere ..because it has to be done stage by stage.

    what final grit gives you 15 µm (16RA") ?

    all the best.markj

    Leave a comment:


  • SDL
    replied
    Originally posted by aboard_epsilon
    i want you to scuff a bit a stainless up with 100 grit paper ..then do the polishing process ..
    only then will i be convinced .

    where the hell do you get phosphoric acid from cheap ?

    all the best.markj
    That will give you very shiny scratches. We mirror polish the inside of the UV chambers to 15 µm (16RA") then electropolish, you can see you face like a mirror. The outside we do with 120 grit and it is very bright but full of lines and no reflection.

    The process also increases corrosion resistance.

    Steve Larner

    Leave a comment:


  • bborr01
    replied
    Hi Evan,

    I too am interested in your work. I am filing it away with the posts about de-rusting through electrolisis.

    Handy information to know when the time comes that one needs it.

    Keep up the fascinating work.

    Brian

    Leave a comment:


  • DFMiller
    replied
    Evan,
    I am following this thread with much interest. Sometimes listening is a good thing. Keep up the good work. Dave

    Leave a comment:


  • boslab
    replied
    mt companies spend an awful lot of time looking at other companies patents, mainly to rejig them to bypass the patent process, thats life i'm afraid as far as patents are concerned its a case of print and be dammed i,m afraid.
    most of the world does not a] follow Christian principles and b] respect intellectual property [methinks britain and America rate quite highly in the ignore the patent bit too.
    Apart from that the Electropolishing recipie from Evan is brilliant, it gets around a difficult problem, worrying weather its sombodies patent?
    copied any music lately? maybee the odd photocopy of a book? [copyright is law too]
    mark

    Leave a comment:

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