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Thread: how to turn glass into a mirror

  1. #1 how to turn glass into a mirror 
    New Member
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    Oct 2018
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    hi to all,
    i have some questions about glass silvering;

    i found this procedure:
    1) make a solution (A) with 1.4 gr silver nitrate + 17gr water
    then, add to the solution 1.2gr of ammonia 26% solution

    2) make a solution (B) with 9.2 gr potassium bitartrate + 4gr sodium carbonate + 17gr water

    3) make a solution (C) made of 5gr (A) + 5gr (B) + 100gr water

    4) put a very clean glass sheet (*) in solution (C) , and leave it in the solution until the glass silvering is done.

    (*) the glass must be very clean before silvering :
    to clean it, wash it with a 6% tin chloride solution,
    then rinse it with hot water.

    The author claims that with this procedure is possible to silver also plastic with very smooth surfaces.

    The questions are:

    1) Do you think that this procedure can really work also for plastics?

    2) How can i make the plastic surface clean (and smooth)?
    do you think that the 6% tin chloride solution is suitable also for plastics, or does need another cleaner?

    I am interested in plastics such as PLA,ABS,PETG; i have read somewhere that PETG is more suitable than the others...

    P.S: this is my first post in this forum,
    i am sorry if i have posted the question in a wrong forum section, in this case i ask to moderator to move it in the right place...

    Thank you!
    Lodovico


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  3. #2  
    Bullshit Intolerant PhDemon's Avatar
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    1) It might be worth a try but I don't think the silver would stick to the plastic.

    2) The tin chloride is there to act as a reducing agent, to convert any remaining silver ions to metallic silver, AFAIK it will not react adversely with plastics.

    As an aside, I would be careful with this, silver nitrate becomes explosive when ammonia is added to it! (Chemist's call this mixture Tollen's reagent).

    http://pubs.acs.org/cen/safety/19960108.html


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  4. #3  
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    If you are looking to do practical in your lab then you can tray in many ways and wide range of process available on online places. I am not going describe the whole process because it might be different from industrial production. So here i am listing the some of website name and list of great article which will help you in finding the answer of that question.


    • Get 1 gram of silver nitrate and 1 gram (0.035 oz) of sodium hydroxide in separate containers and add enough water to both to dissolve them.


    • Mix the two solutions together. A black precipitate of silver oxide will form.
    • Add ammonia until the precipitate completely redissolves.
    • Add 4 grams of sugar and stir until dissolved.
    • Place your article you want to silver into the solution, or pour the solution into a tray containing your article (for larger articles like glass panes)
    • GENTLY heat the solution but DO NOT let it boil. Boiling tears the silver off the surface
    • Eventually the solution will turn to a cream color and your article is now silvered, take it out and wipe off the silver from where you don't want it.
    • If the silver is really stuck to places you don't want it you can apply hydrochloric acid.
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