Advertise on Bikeforums.net



User Tag List

Results 1 to 6 of 6
  1. #1
    Senior Member
    Join Date
    Jul 2005
    Posts
    2,062
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Yet another: Powdercoating question

    So you sand down a somewhat rust-eaten frame, and it's got some pits of varying sizes. You send it to the powder coater, they sandblast it and coat it. It comes home. The new condition of the frame is:

    A) All the pits are filled in and the surface of the frame is smooth and beautiful, via the magic of powder coat, which seeks its own level, like water.

    B) The smaller pits fill in completely, but the bigger ones now appear as little dimples in the finish. It's not as good a finish as you could get with epoxy and paint. But the bike looks better than it did before, and at least it doesn't keep rusting.

    C) Your bike looks like the surface of the moon, only less dusty, and one uniform color. It looks awful, but at least it doesn't keep rusting.

    Eric

  2. #2
    Who cares, just ride it!
    Join Date
    Jun 2006
    Location
    Melbourne
    My Bikes
    1986 Marinoni Special, 1992ish Davidson Impulse, 1981 Miyata 1000, 1981 Apollo Gran Sport, 1983 Nishiki International
    Posts
    988
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I got one of my old roadies powdercoated a while back. It turned out fantastic. No dimples, pitting or surface of the moon that you speak of. Just a nice, smooth durable gleaning finish...
    N-1 is my long-term goal

  3. #3
    Senior Member
    Join Date
    Apr 2006
    Posts
    2,104
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    If the metal is actually pitted you will see pits. If it is pits from the paint coming off that will be removed when they sand blast the bike. In this area they are going to blast the bike no matter how you bring it in because they cannot see your finger prints on the bare metal. If they were to coat the bike without cleaning every place you touched the bike would show up as a flaw. In this area you will get charged for the blasting as part of the price. Roger

  4. #4
    Senior Member
    Join Date
    Jul 2005
    Posts
    2,062
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Thanks, rhenning. Yes, I'm talking about the metal being a pitty party. I'm assuming they will sandblast it. The frame I have in mind I have already sanded down myself (removing both rust and old powder coat) in anticipation of painting it myself. The sanding has improved the pitting somewhat, but not altogether.

    Leigh- do you have before and after pics?

  5. #5
    Senior Member greybeard87's Avatar
    Join Date
    Aug 2005
    Location
    Clayton, NC
    My Bikes
    Bridgestone Mile 112 (fixie); Early 70's Bottechia; 74 Schwinn Continental; Mercier Draco AL; Corratec Freeride MTB; Custom GT Azkar SS
    Posts
    286
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I believe that there are some metal based fillers that powder coat will adhere to. If the pits are that deep ask you powder coater about it.
    [SIGPIC][/SIGPIC]Peace and Bike Grease

  6. #6
    Novist senior member tolfan's Avatar
    Join Date
    Feb 2006
    Location
    Amish Country
    My Bikes
    have about 30 bikes right now
    Posts
    1,515
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    You may want to treat the inside of the tubes withthat rust stoper stuff. I forget the name of it. Try to find a place that does auto parts thay should has some experience with pitting.
    There are some things a man needs to believe in wether they're true or not;

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •