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Thread: Frame Forum: Fillet Brazing- tips, tricks, and info share

  1. #41
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    Default Re: Fillet brazing - newbie advice

    IMG_1522.jpgThat looks heinous - I've never had flux do that.
    - Garro.
    Steve Garro, Coconino Cycles.
    Frames & Bicycles built to measure and Custom wheels
    Hecho en Flagstaff, Arizona desde 2003
    www.coconinocycles.com
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  2. #42
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    Default Re: Fillet brazing - newbie advice

    Steve, do you run bronze/silver the entire length of your sleeve, or just top/bottom and around vent holes?

    Fillets look awesome as usual.

  3. #43
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    Default Re: Fillet brazing - newbie advice

    Quote Originally Posted by Velo Wilco View Post
    Steve, do you run bronze/silver the entire length of your sleeve, or just top/bottom and around vent holes?

    Fillets look awesome as usual.
    It gets in there quite aways - over 1" on each side + the sleeve distortion keeps it put.
    many 100's out there no problem.
    - Garro.
    Steve Garro, Coconino Cycles.
    Frames & Bicycles built to measure and Custom wheels
    Hecho en Flagstaff, Arizona desde 2003
    www.coconinocycles.com
    www.coconinocycles.blogspot.com

  4. #44
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    Default Re: Fillet brazing - newbie advice

    I had little bit problems with my tig welder, so I did about dozen fillet braze practice joints.
    First tinned with 1/16" rod and then build the fillet with 3mm rod, Cycle Desing LFB flux.
    How do these look, am I doing anything right?






  5. #45
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    Default Re: Fillet brazing - newbie advice

    Quote Originally Posted by J_K View Post
    Looks like that one on the left is missing some internal fillet... Yes?
    DT

    http://www.mjolnircycles.com/

    Some are born to move the world to live their fantasies...

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  6. #46
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    Default Re: Fillet brazing - newbie advice

    Quote Originally Posted by David Tollefson View Post
    Looks like that one on the left is missing some internal fillet... Yes?
    The acute angle is definitely missing some internal fillet, but you can't see it well from the pic. Otherwise the internal fillet is quite big.

    Some of the fillets are little bit overheated as you can see separation of the copper.

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    Default Re: Fillet brazing - newbie advice

    Did some more practicing, I'm pretty happy with the progress so far.
    However I'm still struggling to get good internal fillet, tinned or not tinned it does not matter. Tube is internally fluxed and I'm preheating tubes about 2mins.
    Any tips for building better internal fillet and what is desired size of the internal fillet?

  8. #48
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    Default Re: Fillet brazing - newbie advice

    Quote Originally Posted by J_K View Post
    Did some more practicing, I'm pretty happy with the progress so far.
    However I'm still struggling to get good internal fillet, tinned or not tinned it does not matter. Tube is internally fluxed and I'm preheating tubes about 2mins.
    Any tips for building better internal fillet and what is desired size of the internal fillet?
    Yes - line up 50 intersecting joints and run through them all in sequence. The repetition will inform your hand/eye thingy regarding what's working and why.

  9. #49
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    Default Re: Fillet brazing - newbie advice

    Quote Originally Posted by J_K View Post
    .
    Any tips for building better internal fillet and what is desired size of the internal fillet?
    You only need a tiny one.
    - Garro.
    Steve Garro, Coconino Cycles.
    Frames & Bicycles built to measure and Custom wheels
    Hecho en Flagstaff, Arizona desde 2003
    www.coconinocycles.com
    www.coconinocycles.blogspot.com

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    Default Re: Fillet brazing - newbie advice

    Quote Originally Posted by steve garro View Post
    You only need a tiny one.
    - Garro.
    Thanks Garro!

    The internal fillet on the left, would you say that a little less would work also?


  11. #51
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    Default Re: Fillet brazing - newbie advice

    Quote Originally Posted by J_K View Post
    Thanks Garro!

    The internal fillet on the left, would you say that a little less would work also?

    Yep. As long as it's lipsticked around 90% or so of the edge it's not going to come off.
    You are too cold on your thick & too hot on your thin.
    Hardest part to learn!
    - Garro.
    Steve Garro, Coconino Cycles.
    Frames & Bicycles built to measure and Custom wheels
    Hecho en Flagstaff, Arizona desde 2003
    www.coconinocycles.com
    www.coconinocycles.blogspot.com

  12. #52
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    Default Re: Fillet brazing - newbie advice

    IMG_3396.JPGJust laid these down.
    - Garro.
    Steve Garro, Coconino Cycles.
    Frames & Bicycles built to measure and Custom wheels
    Hecho en Flagstaff, Arizona desde 2003
    www.coconinocycles.com
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  13. #53
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    Default Re: Frame Forum: Fillet Brazing- tips, tricks, and info share

    Quote Originally Posted by steve garro View Post
    IMG_3396.JPGJust laid these down.
    - Garro.
    Well, keep practicing fella. You'll get it someday.

  14. #54
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    Default Re: Frame Forum: Fillet Brazing- tips, tricks, and info share

    Here is my first shot at it


    First Fillets by FARR Frameworks, on Flickr

    I had the same problem as Shirk, my Cycle Design Flux turned black the second the flame touched it. My tubes were super clean. They were ultrasonic cleaned in a detergent then acetone wiped. It stayed black around the whole joint. Did you ever figure out a way to limit this a bit?

    What flux and rod do you use Garro?
    Minds Create, Hands Build.
    Ride Fast, Ride FARR

  15. #55
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    Default Re: Frame Forum: Fillet Brazing- tips, tricks, and info share

    Quote Originally Posted by ToddFarr View Post
    Here is my first shot at it


    First Fillets by FARR Frameworks, on Flickr

    I had the same problem as Shirk, my Cycle Design Flux turned black the second the flame touched it. My tubes were super clean. They were ultrasonic cleaned in a detergent then acetone wiped. It stayed black around the whole joint. Did you ever figure out a way to limit this a bit?

    What flux and rod do you use Garro?
    If you email Wade he'll explain the black to you. It's the newer LFB flux formula. The older version didn't do it, but I like the consistancy of the newer stuff better. Performance wise it works just fine.
    Will Neide (pronounced Nighty, like the thing worn to bed)

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  16. #56
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    Default Re: Frame Forum: Fillet Brazing- tips, tricks, and info share

    Thanks for the tips, yeah it just caught me off guard. Soaked off just fine though.
    Minds Create, Hands Build.
    Ride Fast, Ride FARR

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