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Favorite (Easiest) Rust Removal

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  • Favorite (Easiest) Rust Removal

    I'm picking up a batch of reamers later that look like they spent some time in a bucket. Most of the flutes look good, and a number are coated in wax still. I need to clean up the shanks without affecting the dimensions of the flutes.
    *** I always wanted a welding stinger that looked like the north end of a south bound chicken. Often my welds look like somebody pointed the wrong end of a chicken at the joint and squeezed until something came out. Might as well look the part.

  • #2
    Warm citric acid bath.

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    • #3
      That or phosphoric, easily available in US as Jasco metal prep at one of the big box hardware places.

      Phosphoric should take between 15 and 30 min for most rust, at about a 2 or 4 to one dilution from the bottle solution, with a light brushing after 15 min for flaky rust. No idea on timing for citric.
      1601 2137 5683 1002 1437

      Keep eye on ball.
      Hashim Khan

      If you look closely at a digital signal, you find out it is really analog......

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      • #4
        I'd group them by shank lengths, stand them upright in a container (shanks down) and soak in white vinegar for a while, then scrub the shanks with steel wool as they're removed. Rinse in hot water, blow dry with compressed air, then coat in some kind of oil or such.
        Lynn (Huntsville, AL)

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        • #5
          X2 on the vinegar, I usually let things soak for about a week, then scrub off in hot soapy water with a green scrubbie pad. I oil things immediately after drying with 3-in-1. You'd be amazed at the tooling I've saved this way.

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          • #6
            There is a good product called CLR (Calcium, Lime, Rust) that works well for this. It eats rust but is fairly gentle and I haven't had any particular flash rust issues after using it. I've even used it on metal parts in an ultrasonic cleaner for really fast rust removal; that works well, shiny areas still come out shiny, the rusty areas come out sort of dull silver.

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            • #7
              Tape up the cutting edges and pop them into the bead blaster cabinet.

              RWO

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              • #8
                i used to use phosphoric acid until my supply ran out. Now I use Evaporust.

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                • #9
                  Originally posted by Yondering View Post
                  There is a good product called CLR (Calcium, Lime, Rust) that works well for this. It eats rust but is fairly gentle and I haven't had any particular flash rust issues after using it. I've even used it on metal parts in an ultrasonic cleaner for really fast rust removal; that works well, shiny areas still come out shiny, the rusty areas come out sort of dull silver.
                  CLR USED to be phosphoric. I used it. Then they changed it to hydrochloric (muriatic) acid, which is horrible stuff to keep around, it rusts everything. I then looked for phosphoric and found the Jasco Metal Prep at Home Depot.
                  1601 2137 5683 1002 1437

                  Keep eye on ball.
                  Hashim Khan

                  If you look closely at a digital signal, you find out it is really analog......

                  Comment


                  • #10
                    Depends on what I am derusting. I've had good results from Evaporust on cleaning up some lightly rusted sockets. For bigger structural parts I use Ospho, and for stuff that will fit in a 5 gallon bucket, I use electrolysis.
                    “I know lots of people who are educated far beyond their intelligence”

                    Lewis Grizzard

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                    • #11
                      Another vote for vinegar. Hard to beat dirt cheap

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                      • #12
                        Originally posted by J Tiers View Post

                        CLR USED to be phosphoric. I used it. Then they changed it to hydrochloric (muriatic) acid, which is horrible stuff to keep around, it rusts everything. I then looked for phosphoric and found the Jasco Metal Prep at Home Depot.
                        When did this change occur?
                        https://clrbrands.com/en-US/Products...e-Rust-Remover

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                        • #13
                          Put a dash of table salt in the vinegar to speed the action along.

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                          • #14
                            Originally posted by CalM View Post
                            Put a dash of table salt in the vinegar to speed the action along.
                            I use white vinegar and salt, but not a dash. A saturated solution (pour salt in until some settles out on the bottom) is much more effective than plain vinegar.

                            The difference? The rust removal that vinegar will do in a few days will occur overnight with the salt.

                            Environmentally friendly, too. Salt, vinegar, iron are all good to pour down the drain.

                            -js

                            There are no stupid questions. But there are lots of stupid answers. This is the internet.

                            Location: SF Bay Area

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                            • #15
                              Using salt introduces chloride ions, which tend to foster corrosion.. You may see more tendency to flash rust.

                              Ed
                              For just a little more, you can do it yourself!

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