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OT which forum to talk about the final painting of our metal projects

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  • OT which forum to talk about the final painting of our metal projects

    [NOTE: this post my be a bit OT but at least short]

    Is there a forum here on miller forums where it would be appropriate to discuss painting techniques for
    welded projects for outdoors use, such as a utility trailer?

  • #2
    I think it fits in right here.

    I assume you are painting or repainting your own trailer? Best way is sandblast, prime and paint. However sometimes this isn't feasible due to equipment limitations, time, budget, place to do it, etc. Any trailer can be a challenge due to the size plus all the nooks and crannies. Due you have a specific question?
    MM250
    Trailblazer 250g
    22a feeder
    Lincoln ac/dc 225
    Victor O/A
    MM200 black face
    Whitney 30 ton hydraulic punch
    Lown 1/8x 36" power roller
    Arco roto-phase model M
    Vectrax 7x12 band saw
    Miller spectrum 875
    30a spoolgun w/wc-24
    Syncrowave 250
    RCCS-14

    Comment


    • #3
      I painted 500 of them...Bob
      Bob Wright

      Comment


      • #4
        Ryan can help with this as well
        Richard
        West coast of Florida

        Comment


        • #5
          #1
          Hput3 wrote:

          "OT which forum to talk about the final painting of our metal projects

          [NOTE: this post my be a bit OT but at least short]

          Is there a forum here on miller forums where it would be appropriate
          to discuss painting techniques for welded projects"

          #2
          MMW answered:
          "I think it fits in right here.

          I assume you are painting or repainting your own trailer? Best way is
          sandblast, prime and paint. However sometimes this isn't feasible due
          to equipment limitations, time, budget, place to do it, etc. Any
          trailer can be a challenge due to the size plus all the nooks and
          crannies. Due you have a specific question?"

          hput3 responds to MMW's answer:
          I did not see any handy dandy way to easily do multi-quoting or etc so came up with this
          monstrosity.

          I'm responding to MMW But please jump in if you would like to.

          Yes, its my own homemade trailer. It is new construction so in my case hot rolled
          steel rectangular tubing and other elements.

          What I hoped to do is probably not the best way, but as you mention; on
          home jobs one does not always have the means for that best way.

          I do have contractor level airless paint equipment which would mean
          water based paint. I haven't kept up with emerging paint products but I
          do think there are now some latex products especially for metal that
          might lend themselves to application by airless sprayer, maybe requiring
          a specialized primer or the like.

          The only real prepping I will be doing is to wipe it down with oil
          remover and try to remove as much mill-scale as I can with stiff wire
          wheel applied vigorously with powerful hand grinder. Most of you will
          know that you don't really remove all mill-scale with that technique. It
          needs something like sandblast (as MMW mentions) or submersion in a
          `pickle' bath etc.

          But I will be limited to the wire wheel and plenty of elbow grease.

          Any advice along those lines I suggested would be very helpful...

          Also if latex just really is a non-starter then I may be stuck with 5,000
          shake rattle spray cans of Rustoleum....

          #3
          aametalmaster Answered:

          "I painted 500 of them...Bob"

          hput3 responds:
          What is your take on water base?

          Comment


          • #6
            Heck ya! Painting is my favorite thing! I prefer to let the weather naturally paint my projects with a fine patina.

            ....or I take it to the powder coater.

            Depending on the size of your trailer, a lot of powder coaters won’t do it, so an industrial painting outfit can. If it’s a small trailer, you might be in it for a couple hundred bucks to paint it yourself, but you’d be surprised that a powder coater won’t cost that much more.

            Comment


            • #7
              Just my opinions. I would buy a cheap spray gun like this-- https://www.harborfreight.com/32-oz-...gun-56981.html -- It can be from anywhere but I like the pressure guns so you can adjust the pressure easily to compensate for thinner or thicker mixed paint. You did not say where you are from as some states you can not get decent paint anymore. I would stay away from latex paint or water based paint. Sherwin Williams sells a decent industrial enamel or you can get a decent equipment enamel at most farm stores or you can buy Rustoleum qts or gallons at most Lowes/Home Depots. Cleaning/prep you mentioned, unless it is loose scale I mostly just wipe, I use lacquer thinner as a final wipe down. Thin paint as the can says, load gun, and spray a good coat of primer first. Pay attention to all the nooks first then go back and prime it all. Be methodical so you don't miss areas. Let dry or flash as the can states before top coating. I know Rustoleum you can top coat the primer with in 1 hour or after 48 hours. Other brands vary. Pay attention to this as it matters. With Rustoleum I topcat about 1 hour after prime and never had an issue, if you topcat the next day, not waiting 48 hrs it will most likely all orange peel. Good advice I received many years ago, "you are putting on a protectective coating not a fancy paint job". Don't be afraid to lay it on heavy, use multiple coats as needed. Don't worry about runs and sags to much (obviously you don't want a lot of them but a few doesn't hurt) because 6 months from now you will forget about them. Unless you have a hoist to lift it up to do the bottom you may have to flip it over. Then I would just prime/paint the bottom first, let dry, flip and prime/paint the top. This stretches out the time frame of the job though but you can figure that out.
              Last edited by MMW; 09-20-2020, 06:36 AM.
              MM250
              Trailblazer 250g
              22a feeder
              Lincoln ac/dc 225
              Victor O/A
              MM200 black face
              Whitney 30 ton hydraulic punch
              Lown 1/8x 36" power roller
              Arco roto-phase model M
              Vectrax 7x12 band saw
              Miller spectrum 875
              30a spoolgun w/wc-24
              Syncrowave 250
              RCCS-14

              Comment


              • #8
                Forgot to mention, make sure you clean the gun with lacquer thinner when done. Fill cup about 1/4 of the way with thinner, shake and spray it through. Clean off outside with rag and/or brush with thinner then put a little clean thinner in cup for a final spray through. You won't like it if the paint drys inside everything.
                MM250
                Trailblazer 250g
                22a feeder
                Lincoln ac/dc 225
                Victor O/A
                MM200 black face
                Whitney 30 ton hydraulic punch
                Lown 1/8x 36" power roller
                Arco roto-phase model M
                Vectrax 7x12 band saw
                Miller spectrum 875
                30a spoolgun w/wc-24
                Syncrowave 250
                RCCS-14

                Comment


                • #9
                  Originally posted by MMW View Post
                  .. ... ...You won't like it if the paint drys inside everything.
                  Thanks for the all your advice, I got a special good laugh at the point above having some experience with that

                  Comment


                  • #10
                    ...and then don’t loan your paint gun to a guy named jimmy Landrum, he’ll return it to you with the “extra” paint he left inside of it....because he’s such a nice guy.....

                    Comment

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