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Rust removal

  • 10-08-2020 8:19pm
    #1
    Registered Users Posts: 1,778 ✭✭✭ rugbyman


    Hello
    I am about to start preservation/restoration of a 50 year old car,an NSU
    the car is fairly solid ,but has twenty or thirty rust patches, none rusted through.

    Good paint jobs cost quite a lot, perhaps 3,000 euro. i am reluctant to pay this . What i want to know now is whether to use sandpaper, or chemicals to sort out the rust spots. When de rusted I may just rust proof them prior to a re spray next year.

    On Kadmans thread ,he used a chemical, and another was recommended to him.

    Several other chemicals are often advertised.
    Can any one suggest a particular route to take

    Firstly sandpaper v. chemicals
    what to use to prevent rust when down to clean metal

    thanks in advance


Comments

  • Registered Users Posts: 3,803 ✭✭✭ xieann


    Uff. Off the top of my head you need to visit a YouTube channel:
    He restored a serious rust bucket of an 1980s Volvo.

    You need some steel sheet and cut them into various shapes.


  • Moderators, Home & Garden Moderators Posts: 4,743 Mod ✭✭✭✭ kadman


    You basically have 3 choices when it comes to rust.

    If its rusted through, then the only option is to cut it out and replace with new metal.


    If its surface rust or rust with pitted craters . Either chemically remove the rust, or sand it out.

    If you use a suitable chemical remover, then you need to use a protector afterwards.

    Or you could brush off the loose rust, and apply a rust enscapulator to seal it in for spraying.

    My number 1 option is always to remove it, and replace with new metal.


  • Registered Users Posts: 2,492 ✭✭✭ Car99


    rugbyman wrote: »
    Hello
    I am about to start preservation/restoration of a 50 year old car,an NSU
    the car is fairly solid ,but has twenty or thirty rust patches, none rusted through.

    Good paint jobs cost quite a lot, perhaps 3,000 euro. i am reluctant to pay this . What i want to know now is whether to use sandpaper, or chemicals to sort out the rust spots. When de rusted I may just rust proof them prior to a re spray next year.

    On Kadmans thread ,he used a chemical, and another was recommended to him.

    Several other chemicals are often advertised.
    Can any one suggest a particular route to take

    Firstly sandpaper v. chemicals
    what to use to prevent rust when down to clean metal

    thanks in advance

    €3000 for a good paint job would be considered cheap these days. To remove rust comprehensivly on car body panels is near impossible due to the thin sheet metal , 1.0mm,normally used in their construction . Cut it out and replace with good metal or it will come back and ruin any paint job be it a 3k job or 10k job.
    The person doing the repairs also needs to ensure any welded areas are protected properly or those areas will rust again also. .


  • Moderators, Home & Garden Moderators Posts: 4,743 Mod ✭✭✭✭ kadman


    You cant go from this,

    522661.jpg

    To this,

    522662.jpg


    With anything other than sheet metal. Sanding, chemicals or filler wont do it.
    So you need to be realistic in what you are trying to achieve. And any rust bubble on your car is never to far from a whopping hole when you start digging.


  • Registered Users Posts: 1,778 ✭✭✭ rugbyman


    Thanks for all replies
    In the next week or two I shall get the rust removed. Whats the best product to apply to the then shiny bits to preserve it over the winter. it will live indoors
    Regards


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  • Registered Users Posts: 2,492 ✭✭✭ Car99


    rugbyman wrote: »
    Thanks for all replies
    In the next week or two I shall get the rust removed. Whats the best product to apply to the then shiny bits to preserve it over the winter. it will live indoors
    Regards

    Rattle can zinc primer that'll keep it healthy over the winter indoors.


  • Registered Users Posts: 1,778 ✭✭✭ rugbyman


    I plan to do this rust removal in near future.
    Can anyone recommend a particular brand of rust remover than i can use

    Thanks in advance


  • Registered Users Posts: 2,492 ✭✭✭ Car99


    I use bilt hammer 80.


  • Registered Users Posts: 1,778 ✭✭✭ rugbyman


    my friend just told me of devices ,air driven moving small rods, googled them, watched a video of one in use, but for my job ,perhaps chemicals is best


  • Moderators, Home & Garden Moderators Posts: 4,743 Mod ✭✭✭✭ kadman


    Needles air power driven tool.

    Rapidly picks at the surface rust,


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  • Moderators, Home & Garden Moderators Posts: 4,743 Mod ✭✭✭✭ kadman


    You probably need to do a google to find out for yourself whether you need a
    rust removal chemical, or a rust convertor chemical. As there is a difference between the 2.

    There are also rust enscapulators that cover and trap the existing rust.

    So do the due diligence.

    Personally I have used Vactan, Fertan and Genolite. Plenty of google info on them all.


  • Registered Users Posts: 3,429 ✭✭✭ spaceHopper


    What about a wire brush on the end of drill, sand area to cut feather in, chemical treatment, very good clean, tack cloth the rust preventive primer, filler, top coat and clear coat.


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