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  1. #1
    Join Date
    Mar 2012
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    Default Amac blade brazing unit

    Hi all
    I just got this brazing unit, but don't know how to operate it
    Is there anybody how have any information about this unit??

    Amac blade brazing unit-dscn0871-jpgAmac blade brazing unit-dscn0870-jpgAmac blade brazing unit-dscn0872-jpg
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  3. #2
    Join Date
    Dec 2007
    Location
    Sydney
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    2,205

    Default

    I used to fix the blades for our Woodfast bandsaw with a similar device about 40 years ago.
    From memory I scarfed the blade about the same amount as the width.
    Make sure it sits true in the clamps.
    Snip off a small piece of silver solder and flatten it to fit in the scarf.
    Aply some suitable flux.
    The amount of power used depends on the width of the blade, best just try it.
    Switch on the power and when the blade is heated use the centre clamp to squeeze the joint together.
    Trim up with a file on the back.
    To be quite candid after a while I found just using the oxy and a simple jig easier.
    In some ways the silver solder is better than the resistance welders on the metal cutting bandsaws as you don't have to anneal the blades after welding.
    H.
    Jimcracks for the rich and/or wealthy. (aka GKB '88)

  4. #3
    Join Date
    Mar 2012
    Location
    sydney
    Posts
    156

    Default

    Quote Originally Posted by clear out View Post
    I used to fix the blades for our Woodfast bandsaw with a similar device about 40 years ago.
    From memory I scarfed the blade about the same amount as the width.
    Make sure it sits true in the clamps.
    Snip off a small piece of silver solder and flatten it to fit in the scarf.
    Aply some suitable flux.
    The amount of power used depends on the width of the blade, best just try it.
    Switch on the power and when the blade is heated use the centre clamp to squeeze the joint together.
    Trim up with a file on the back.
    To be quite candid after a while I found just using the oxy and a simple jig easier.
    In some ways the silver solder is better than the resistance welders on the metal cutting bandsaws as you don't have to anneal the blades after welding.
    H.
    Hi
    Thanks for the info.
    Used it today and it worked well on a 1/2" blad corbonsteel, only problem was I ddn't have any thin sheet of silver solder, had to hammer the round stick flat.

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