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  1. #1
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    Saw Table Discoloration

    I'm still in the trying-to-keep-it-looking-new phase with my SawStop, but I'm losing the battle quickly. Last night, I set a board on one of the cast iron wings. That board, unbeknownst to me, had some wet glue on it. A few minutes later, when I picked up the board, I was unpleasantly surprised to see this discoloration in the top. Keep in mind that this discoloration is what remains after I tried cleaning it with Bar Keeper's Friend, Brasso, and 409. While I'm sure the table will become further discolored over time, I sure don't understand how yellow glue can cause such an unsightly appearance on a cast iron table top. Didn't SawStop know that the saw was likely to be used around wood glue? (Ignore the light reflection at the bottom of the photo.)

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    Re: Saw Table Discoloration

    I'd try some 000 steel wool and WD-40 to get that off. Then treat the top with CRC 3-36 as needed. I use CRC 3-36 on everything cast iron in my shop and have zero rust.

  3. #3
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    Re: Saw Table Discoloration

    Cast Iron oxidizes very quickly with the slightest moisture. It must be chemically protected with oil or wax.

    Be sure NOT to use silicone because it will attach to wood fibers and make any attempt at finishing horrible.
    Many automotive waxes and some furniture paste waxes contain silicone.

    But, I am reminded of my art supplier when I complained about the paint cracking and peeling on some very expensive paint brushes. His reply was; Are you gonna use it or look at it?
    Last edited by Mike Davis; 08-09-2018 at 02:29 PM.



    One machine can do the work of 50 ordinary men. No machine can do the work of one extraordinary man." -Elbert Hubbard

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    Re: Saw Table Discoloration

    File it under stuff happens. Had a similar experience when my Saw Stop was new. Mine was caused by daughter's idiot boy friend working on his r/c car. Spilled something. Thankfully she finally dumped him. The stain is still there but it cuts fine.
    Last edited by ScottM; 08-09-2018 at 02:38 PM.
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    Re: Saw Table Discoloration

    I know it's like a new car, but at the end of the day it's a tool to be used and not a fine piece of art. Treat it as such, use it, but don't abuse it.
    Nothing beats a try but a failure, failure is an opportunity to learn.
    http://graywolfwoodworks.wordpress.com/

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    Re: Saw Table Discoloration

    Quote Originally Posted by Graywolf View Post
    I know it's like a new car, but at the end of the day it's a tool to be used and not a fine piece of art. Treat it as such, use it, but don't abuse it.
    But it costs as much as a fine piece of art...

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    Re: Saw Table Discoloration

    Quote Originally Posted by nn4jw View Post
    I'd try some 000 steel wool and WD-40 to get that off. Then treat the top with CRC 3-36 as needed. I use CRC 3-36 on everything cast iron in my shop and have zero rust.
    I'll try that. By the way, I neglected to mention that it WAS treated with CRC 3-36. I spray some on every day or two and wipe it down. Maybe the WD40 will help.

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    Re: Saw Table Discoloration

    top cote

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    Re: Saw Table Discoloration

    Oh, one other thing. Cast Iron is porous so rubbing the surface will not remove stains. You have to dissolve the rust with a mild acid like vinegar. Then neutralize the acid with baking soda. Then treat with oil or wax.



    One machine can do the work of 50 ordinary men. No machine can do the work of one extraordinary man." -Elbert Hubbard

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  13. #10
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    Re: Saw Table Discoloration

    Quote Originally Posted by Mike Davis View Post
    Oh, one other thing. Cast Iron is porous so rubbing the surface will not remove stains. You have to dissolve the rust with a mild acid like vinegar. Then neutralize the acid with baking soda. Then treat with oil or wax.
    Is this discoloration actually rust? What vinegar? Rub it on? Let it soak? Thanks.

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    Re: Saw Table Discoloration

    Yes, black iron oxide. Apple cider vinegar. best to let it soak over night, maybe soak a small sponge and lay it on the rust spot...


    Here are some other methods to try.
    https://www.wikihow.com/Remove-Rust-and-Corrosion#



    One machine can do the work of 50 ordinary men. No machine can do the work of one extraordinary man." -Elbert Hubbard

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  16. #12
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    Re: Saw Table Discoloration

    I think glue is worse than sweat. You can wipe off both as they happen but I think glue must be more corrosive.

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    Re: Saw Table Discoloration

    RustFree and you should be good as new

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    Re: Saw Table Discoloration

    Quote Originally Posted by WoodWrangler View Post
    RustFree and you should be good as new
    Applied in what fashion?

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    Re: Saw Table Discoloration

    What is it? a Harley? LMBO!

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