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  1. #1
    Join Date
    Dec 2013
    Location
    Australia
    Posts
    31

    Default Bandsaw blade joining

    Ok I am new to the site but not woodworking. I was a teacher for 40 yrs.
    Many years ago we used to rejoin broken blades due to cost and how often they seemed to snap.
    Now I want to resize some blades I have and have not had any success.
    We used to use silver solder, scarf the joint and bingo.
    Now either I have the wrong silver solder Or the wrong flux.
    I have looked on the web and 50% silver solder is dam expensive. Has anyone tried brass brazing to join the blades does it really need to be silver solder ?
    Cheers

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  3. #2
    Join Date
    Dec 2013
    Location
    Australia
    Posts
    31

    Default Joining bandsaw blades

    OK I found a number of threads on the topic and it seems that the silver solder I thought was OK may be too low in Silver but it is so old I cannot tell what it was OR I have the wrong flux OR i am overheating it.
    I looked at buying a new stick of 45% Silver solder $109 for 5 sticks ouch. Does anyone want to sell one of their sticks as I think I will be dead before I use that many.
    Cheers

  4. #3
    Join Date
    Oct 2002
    Location
    NSW
    Age
    58
    Posts
    1,598

    Default

    I've just failed abysmally at my first attempt at repairing a bandsaw blade, but I suspect my grandfather's flux was probably the issue.

    Anyway, re: silver solder, my local Bunnings seems to be clearing out the TradeFlame products, so I scored 2 long sticks of silver solder for $2. Might be worth a look at Bunnings?

  5. #4
    Join Date
    Dec 2005
    Location
    South Australia
    Posts
    3,863

    Default

    What are the problems you are having

  6. #5
    Join Date
    Oct 2008
    Location
    Leopold, Victoria
    Age
    62
    Posts
    4,145

    Default

    Not sure why you are looking for 50% silver as all you need is this. The price varies on these depending on the silver content but they only go up to 15%. Have you made a jig to hold the 2 ends of the blade in place while you solder them.
    Brazing is not an option as you need to apply too much heat and it doesn't flow as easily.
    Dallas

  7. #6
    Join Date
    Jun 2006
    Location
    East Warburton, Vic
    Age
    51
    Posts
    13,177

    Default

    Quote Originally Posted by Brett57 View Post
    Does anyone want to sell one of their sticks as I think I will be dead before I use that many.
    Cheers
    Send me a Private Message (click on my username to see option for PM)

    I have plenty of sticks.
    Cheers

    DJ

  8. #7
    Join Date
    Jun 2004
    Location
    Mareeba Far Nth Qld
    Age
    80
    Posts
    2,961

    Default

    I use ribbon silver solder to join my band saw blades. It is available on ebay or just google , ribbon silver solder.

    Jim
    Sometimes in the daily challenges that life gives us, we miss what is really important...

  9. #8
    Join Date
    Apr 2007
    Location
    Adelaide Hills, South Australia
    Posts
    3,500

    Default

    Silver brazing (=/>50% silver) a bandsaw blade join.

    How to Make Custom Length Bandsaw Blades Without a Welder - YouTube
    Stay sharp and stay safe!

    Neil



  10. #9
    Join Date
    Sep 2008
    Location
    Richards Bay
    Age
    72
    Posts
    73

    Default

    If you have access to someone with a MIG welder just get them to butt weld the two end together, then grind them flat and ANNEAL. This is what the blade manufacturers do. this is similar to the contraption they have on the side of the Doall metal bandsaws

  11. #10
    Join Date
    Dec 2013
    Location
    Australia
    Posts
    31

    Default

    Quote Originally Posted by DJs Timber View Post
    Send me a Private Message (click on my username to see option for PM)

    I have plenty of sticks.
    Thank you very much for that offer.I have only just got back to that project.
    I did get something that I hope will do the job from China ?? but have not tried it yet
    Does the offer still stand? How could we arrange it ?
    Many thanks

  12. #11
    Join Date
    Jun 2006
    Location
    East Warburton, Vic
    Age
    51
    Posts
    13,177

    Default

    Yeah the offer still stands.

    Click on my username and send me your name and address in a Private Message and Ill post a bit off to you.
    Cheers

    DJ

  13. #12
    Join Date
    Mar 2006
    Location
    Geelong
    Age
    39
    Posts
    300

    Default

    I bought two sticks of 45% silver and easy flo flux for way less than that from BOC. Their website listed a higher price but in the store they charged less.
    I used it for repairing some tungsten tipped bandsaw blades and even under very high tension the joints haven't failed .

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