Iron frame cleaning

[Farrell]

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Trisodium phosphate - yes, correct. If rusty, sand it - you're going to =
paint it anyway. If I sand down to bare iron, I prime with =
automotive-type primer. The finish!

Terry Farrell
  ----- Original Message -----=20
  From: Sarah Fox=20
  To: Pianotech=20
  Sent: Thursday, February 26, 2004 5:25 PM
  Subject: Re: Iron frame cleaning


  Hi I=F1aki,

  Trisodium phosphate (recommended by Greg) is a powerful detergent and =
would be a good first step for degreasing.  However, it's not going to =
help with the rust, which I suspect is much of your problem.  There are =
a variety of products here in the US (and I'm sure there in Spain) that =
attack rust.  One such product is called "Naval Jelly," my favorite.  If =
you can't find that, there's also "CLR," which attacks calcium, lime =
(the same thing) and rust.  These products react chemically with the =
rust to "dissolve" it, while not harming the metal.  I've used them with =
great success on rust-stained concrete and rusty iron hardware.  You can =
probably find similar products at your local hardware store or grocery =
store in the "cleaning supplies" isle.

  Peace,
  Sarah

    ----- Original Message -----=20
    From: Coello Servicio T=E9cnico de Pianos=20
    To: pianotech@ptg.org=20
    Sent: Thursday, February 26, 2004 4:13 PM
    Subject: Iron frame cleaning


    Hello.
    I want to ask you what is the product you use for remove and =
eliminate the dirt in a 100 years or more iron frame?=20
    A person who have a painting bussiness suggested to use acetone, but =
when I tried it, I have to use so much since the dirt is huge. That =
over-acetone made suddenly several black spots in the iron frame. I also =
don=B4t like to work with that product since is not very effective I =
guess.
    I will paint the iron frame, but I need to know if there is a better =
way.
    thanks.

    I=F1aki Coello
    Valladolid. Spain.

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