Advertise on Bikeforums.net



User Tag List

Results 1 to 2 of 2
  1. #1
    Senior Member
    Join Date
    Jul 2013
    Posts
    83
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    sand blasting pitting? or other method?

    Basically i need to know how to get rid of pitting. I tried navel jelly which did get rid of the rust but not the pitting.

    Will sand blasting work? Or are there other method(s)?

  2. #2
    Senior Member
    Join Date
    Apr 2009
    Location
    New Rochelle, NY
    My Bikes
    too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
    Posts
    19,959
    Mentioned
    31 Post(s)
    Tagged
    1 Thread(s)
    You don't want to do anything to remove the pitting. Since you can't add metal back, all sandblasting or any other method of lowering the metal to the depth of the pits would only further weaken the tubes.

    If you're painting, the primer coat will fill the pits, though you might need 2 coats to do a better job.

    Shotpeening - like sandblasting, but with steel balls - will help blend out the edges of and serious pitting without removing more metal. In fact shotpeening tends to strengthen the tube by easing some latent stress risers. I doubt it's worthwhile for your purposes unless the rusted area is deep and extensive.
    FB
    Chain-L site

    An ounce of diagnosis is worth a pound of cure.

    “Never argue with an idiot. He will only bring you down to his level and beat you with experience.”, George Carlin

    “One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN

    WARNING, I'm from New York. Thin skinned people should maintain safe distance.

Posting Permissions

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