Announcement

Collapse
No announcement yet.

Solder aluminum?

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • Tibertus
    replied
    Good luck. I've seen the rod you're talking about on the web. The instructions there (I can't remember the site address now)are specific, you have to clean the aluminum with a stainless steel brush, and don't put the flame of the torch on the rod. You heat the aluminum then apply the rod to the heated surface. I've never actually used the stuff and was thinking about trying some, now I think I'll wait a while. Right after I close this deal on the Brooklyn bridge. Again good luck and let us know how it works out.

    Leave a comment:


  • Guest's Avatar
    Guest replied
    the person with the magic solder made it all the way to the Denver flea market this summer. while at his stand, I saw a jar that resembled Vaseline with sand mixed in,although I did not ask him, I really think that was what it was.

    Leave a comment:


  • Oso
    replied
    Nope, do not remember, and the plastic package is long gone. Even the hardware store I got it at is gone. All I have is the coil of solder.

    But yes, propane torch worked fine.

    Leave a comment:


  • David Hafnorske
    replied
    Thanks for the info guys. I didn't realize you could buy it off the shelf. I'll have to check the hardware stores.

    Leave a comment:


  • David Hafnorske
    replied
    Docsteve66, just kidding, I used a line from George Straight

    Leave a comment:


  • Guest's Avatar
    Guest replied
    Oso,

    I must bow to your first hand experience with the coiled type of solder since I've only seen it used by another person. Just curious, was this a low temperature solder that you used? By that I mean, can you use regular propane torch? I'm wondering if what you used was a brazing wire?

    You've certainly piqued my interest in the stuff that you have used. Do you remember where you bought it or what the name of the product was. Thanks.

    Albert

    Leave a comment:


  • Oso
    replied
    Well, I have the coil stuff, and if that makes a soft, non-sructural joint, someone will have to break the news to the structural joints I have made, some of which have lasted 20 years of reasonable stress (as much as the material would stand that was connected)

    I used it for structural joins in equipment, and the joints seemed more like a brazed joint, not at all like soft solder.

    Leave a comment:


  • Guest's Avatar
    Guest replied
    Oso,

    There are actually two type of aluminum solder that I'm familiar with. The most popular is stuff that you see at flea market where they show off how well it works on aluminum beer can. Their favourite example is cracked aluminum propeller which has been soldered. This stuff is light and does not require any flux. Just clean the surface with SS brush and start rubbing it. It melts and creates a puddle which doesn't wet the aluminum very well. More often than not it creates a cold solder joint.

    There is the second kind that uses flux and the "solder" is much thinner and is usually sold coiled up in a small plastic container. This stuff is very expensive and HVAC folks use it to join copper and aluminum pipes in air conditioning units. I've never use it myself but I've seen it use and this stuff wets very nicely and obviously creates air tight seal, however I got the impression that it's a relatively soft material so not suitable for any structural.

    All of these so called aluminum solder is of very limited use. I've heard of aluminum brazing which is suppose to be pretty good.

    Albert

    Leave a comment:


  • Oso
    replied
    Hey, what's this about aluminum solder not working? I got a coil of it and some flux long ago.

    I have soldered quite a few pieces of aluminum together with the stuff, using a propane torch.
    Dang near melted the aluminum a couple times, but it worked fine.

    I got it at the hardware store, and it is NOT a tin-lead solder, it is something lighter. No idea what.

    Leave a comment:


  • docsteve66
    replied
    David Hafnorske: I have no idea where i left it. But I was at home depot today, they are selling it, two sticks for about 4 dollars. Pre fluxed (blue if I remember right). What part of Az? I graduated high school in Tolleson, attended schools in Cold water, Mesa, Yuma, Gila Bend plus more in Az.

    Leave a comment:


  • David Hafnorske
    replied
    Docsteve66 .05$ for how much? I would like to get my hands on some just to try. Not interested in the land, unless of course you would swap it for some ocean front property in Arizona.

    Leave a comment:


  • FLPR@juno.com
    replied
    There is an old trick foe soldering to aluminum (and other materials) that I have seen, but never tried. Load a wire brush wheel with solder by running it against a piece of bar solder. Then heavily wire brush the area you want to solder. This will scrub off the oxide and deposit a coating of solder on the material. Then you solder in the conventional way. I have never tried it, but the demo I saw looked pretty impressive.

    Leave a comment:


  • docsteve66
    replied
    Naw, Dave B, I still have a chunk lefft over from visiting a fla market in Florida also. Alistair and I aint biting. Will sell mine for .05$ plus postage . Also have some mountain land here in Florida.

    I have no idea how much money I have spent, just to learn how the trick was done. The guy I saw made decent looking joints, I figured it was worth while to play with the stuff. He used (if memory serves) a butane torch. I watched long time for anlges, temps (guesstimates) etc. I swear I did it like he did!!!!. I did it all different ways. looked like i used bubble gum!!!.

    Would still buy another stick if he would let me try it under supervision. VENDETTA TIME! I don't care if it is strong or not. Just can't believe I was suckered.
    Also (at air craft show at tampa) they had a abrasive wheel, I watchedthe guy cut files, time after time. Did not believe what I saw , so I bought 3 or four. What ever I bought never got through a Nicholson file. I doubt that he had annealed to files- fraud.

    who said he was self tought, a good studentwith a poor teacher? Thats me !

    Leave a comment:


  • Dave Burnett
    replied
    I bought some of that Aluminun rod too. It works great for filling holes in pop or beer cans but thats about all. If any of you guys need to fill any holes in beer or pop cans let me know and I'll give you the rod to do it with.

    Leave a comment:


  • Thrud
    replied
    Alistair,
    It is customary to buy swamp land - NOT Aluminun Solder in Florida! (titter, titter)

    Everyone

    Lee Valley Tools sells a small can of Argon - used to force air out of opened wood finish containers to extend their shelf life. Works great, but a wee expensive. Mind you, some of the oil finishes are not that cheap either so, what the hell. Since Argon is inert and heavy it displaces the air easily. If you have a TIG welder on Argon you could just give it a shot from that!

    Damn I am good, for what I have no idea...

    ooH! ooH! Lee Valley also has Kolsch German Beer glasses - for you purists out there. Stick 'em in the fridge and serve your Grasshopper (German Beer made in Calgary, AB)ice cold like a man... Makes good glasses for bubbly too - keeps it more effervescient than normal champagne glasses.

    Leave a comment:

Working...
X