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  1. #1
    Junior Member
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    Pre-cleanup Fillet Brazed joints?

    I've been trying to practice my fillet brazing recently with just some scrap .035 4130 tubing I picked up and have been having some issues. Really clumpy, not that smooth...but I also haven't taken the time to fully clean up a joint yet. Kinda weighing my time between "spend tons of time to clean up this ugly braze" and "just get better so I don't have to clean up as much later" and I always pick the latter. Still, it would be really helpful to see other peoples' post-braze pre-cleanup joints. Anyone have pictures to share?

    Cheers,
    Eric

  2. #2
    Senior Member calstar's Avatar
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    Heres a linki to unpainted frames by pro builders, look around and you'll see lots of finished fillets.

    http://api.viglink.com/api/click?for...13628779064126

    this would be a worthy goal for finished fillets IMO:

    http://www.kirkframeworks.com/gallery3.html
    Last edited by calstar; 03-09-13 at 08:41 PM.
    "The older I get the better I was" (from Old Guys Rule t-shirt)

  3. #3
    Randomhead
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    it's probably worth cleaning a few up to see how hard it can be, but you are aiming to make it so that there isn't a lot of cleanup, and that requires practice brazing

  4. #4
    Junior Member
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    This is the unfinished headtube of a frame I made at UBI in May. I think the fillets won't take too much to finish. If your fillets are lumpy, try a little more heat and make sure you're really getting the brass to wet out and the puddle is consistent.

    06. fillet detail.jpg

  5. #5
    Randomhead
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    philsci, looks good. I agree that should clean up pretty well. Be careful not to undercut the tubing. I don't think lumps are hard to clean up at all, it's really the valleys in between the lumps that are the problem. The thing that really drives me crazy during cleanup is the sharp edge at the tube. So hard to get rid of without cutting into the tube. This is my main goal to avoid when I am brazing.

  6. #6
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    Quote Originally Posted by philsci View Post
    This is the unfinished headtube of a frame I made at UBI in May. I think the fillets won't take too much to finish. If your fillets are lumpy, try a little more heat and make sure you're really getting the brass to wet out and the puddle is consistent.
    06. fillet detail.jpg
    Pretty good fillets. Would clean up easy.

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