Does flux go bad?

Jewelry

Hi, I used to be able to solder, but it has been some years. I now have to seriously learn to solder and solder well. I have about 7 different solders. The usual silver bearing ez, med, hard, I also have IT since I do enameling, I also have copper solder from Rawtreasures, and as well as these very thin rods of solder used here in Mexico that are both silver and bronze colored (I believe they are low temp ones)

I have Batterns Flux, but I am frustrated....I bought it a while back (not years) and I read online that it is supposed to be yellow colored, but mine is transparent. Can it go bad? Is this the problem, last night I tried the IT because I have a project to do that is a potential money maker for our small workshop (more on that later)anyway, I am trying to put a half ring on to a small plate for a key chain fob. This is all copper and I need IT solder for enameling. Copper being what it takes to enamel on. This potential project will go to Finland! I used the Batterns, and the IT just balled up, I thought I would try it by introducing it when it was hot enough, I have a piece of wire type, not pallions. The ball is now pretty big actually. It would not attach to my item.

I also have a bottle of flux I bought from Rawtreasures but I am not sure what type it is. I also have a bag a white powder (fundante in spanish, in english to melt or fuse) that I bought when I bought the Mexican soldering rods (this is what is used here by most workers doing tumbaga (similar to bronze), brass, alpaca soldering. and I assume silver.

I have a little smith torch, it is oxygen/propane mix.

I clean my metal, I flux it, both sides, and edge, I flux the ring, with Batterns. I heat it up, it gets flakey white, I have my palliones there already, and they just sorta ball up but don't flow. I heat the crap out of it, out of frustration and start over again! HA! I am frustrated needless to say. I used a big regular sized propane/oxygen torch in school, I could do it with that. But this little tiny torch has me frustrated, I have the tip #1 on it. HELP! hehe

Any advice would be good. I need a mentor....someone I can go to that will help me solve these problems. hehe anyone?

I run a small workshop (I say small, but I guess it is pretty big actually) here in Morelos, Mexico where women and men who have no options other than to work very long and hard days in the fields for an American Co (I am American), they work these people 7 days a week, up to 14 hours a day for about $50 US (you can't live on that here even), while the main gal in my workshop (the best student in our state who won a scholarship from President Fox back then and couldn't use it due to her being so poor that she couldn't pay room/board to make use of it) and the reason why I opened it in the first place makes about $100 US now a week and works 40 to 45 hours instead of close to 100 hours she was working before. She also was born with a cleft palate and wasn't treated very well out there.....anyway, I have 6 young women and 1 young man right now, who are the sole supporters of their families at this point here. I know concepts but many I have never put into use. We have learned to do enameling, and are advancing on that, I never learned to do that, but with books and the internet I can teach it. We do glasswork in the flame (Lampworking) and offhand work as well in the flame. We are rather stuck with what I can accomplish. We have rudimentary tools, I don't have an income, but we buy what we can with the money we make. We have a huge need for tools, and other equipment. Unfortunately I cannot just order it from the States, it is complicated. We get whammied with 27% tax if the order is caught, so we have to be prepared. Small orders (under $300 via regular mail do ok). We lost the inital order for the workshop because UPS Mexico dumped it into a warehouse and being it was mostly enamel powder they didn't understand what it was and we couldn't get any broker to broker it for us. So they made it disappear and we fought for 2 years to get a partial replacement from the vendor, and lost 2 years of the use of all of this wonderful material. UPS Mexico is not UPS USA. Lesson learned. We obtained a small rolling mill this year, and now need to learn to use it. I am always scrambling for saw blades, we only have two saw frames, bezel stock which is not sold here, or to learn to make it with our rolling mill, I need some good pitch, chasing tools, and chasing hammer because I do know how to do this ok, it would work well for enameling I think. Pattern rollers for our rolling mill would open up some more decorative avenues to the group. We have lots of copper, and can get bronze (tumbaga) and brass, alpaca easily. I have never seen silver sheet for sale here...and I have no idea where to get it, even though we are close to Taxco, they keep secrets very well. It is like a big deal to not tell you where to obtain it at for some reason. Well and I can't afford that right now anyway. I want to help more people and families, but I have to manage things very carefully. We have been doing this now for 5 years. They are wonderful people, never miss a day of work, and are very appreciative of anything I can accomplish for them. We just got a small sofa set for the workshop so we can have meeting and figure things out, it was broken but being a jack of all trades it seems I fixed it, and it is now like new! hehe. Our workshop measures 41 x 17 feet. I made a table out of 3 pieces of plywood, and the table measures 12 x 8 feet, we have a soldering station, enameling station, lampworking station, beading station and other areas. We have a big air compressor and a oxygen generator (my baby). We make alot of our own tools, I learned how in college, but we need a belt sander, here the craftsman belt sander what is sold in the US is like $159 US and here it is $600 US! and that is at Sears here. It makes no sense. People think Mexico is cheaper than the US, it is if you don't buy anything. Our electricity is double what you pay per watt. Carlos Slim is raping the country. Phone is so expensive here too. But some things are really pretty cheap, like copper, whole foods, help and workers. We just finally after 5 years got the bathroom done! This was a big deal, we had to build a septic tank, we don't have running water out there yet, but we use a barrel of water for that, works great! Thank god they are out of my house bathrooms! It is a relief for me to accomplish these things. Our work is well at times rustic, due to lack of knowledge, but we do what we can do, and we always learn something new, daily, and often we make a huge jump.....now if I can figure out what I am doing wrong soldering! ugg...hehe very frustrating. I wish I had my college torch! It was a hoke or something like that....loved that thing. It had a nice flame, and didn't feel so "small"...I have checked out youtube, online, read and read.....I just want to understand what am I doing wrong? hehe

So there is my project in a nutshell.

I am so enjoying being here, seeing what can be done, and I am very excited about things I have learned here! I just hope someone can help me understand what I am doing wrong with the soldering problem....I am hoping to make new friends! This is a wonderful group!

Thank you!
Laura


Rich Waugh's picture

Welcome to ArtMetal,

Welcome to ArtMetal, Laura!

On the soldering, it sounds as though your torch is too small and too hot - the solder is getting hot but the work is not. You could try building a small "oven" from soft firebrick if you have any, to reflect the heat back and increase the effectiveness of the tiny torch. If you have a bigger tip, use it.

It is possible to make a propane/air torch from nothing more than plumbing pipe and fittings. You need valves to control the propane and the air, and a few inches of tube where they can combine to mix for burning - think of your old Hoke torch and more or less duplicate what it looked like. It will take some fussing to make the burner tip, but it can be done with very little. Be careful!

Alternately, you could make a small charcoal fire and let it burn down to coals and place the work on it to solder with the Little Torch - the coals would heat the piece to near the soldering flow point and the torch would take it over the top. Or you could use a blowpipe and air to focus the charcoal heat - it was done that way for centuries before the invention of the torch.

Copper needs to be sanded shiny before soldering, too. It sounds as though your Battern's may be old, but it should still work. If not, mix some boric acid and alcohol to make a paste. Or plain borax and water will work, though it bubbles a lot before it melts.

Hope this helps.

Rich


beadaholic's picture

Thank you Rich

Thank you Rich! Yes, I guess I could make a torch, I hadn't thought of that, although I think it might be beyond my means, I respect fire, propane, and oxygen, and I don't want to blow myself up! Without the great medical care you get in the US I would be up a creek! But I understand I think what is happening, it is just not able to heat up the whole deal, and that is really the truth. I am frustrated with this little torch, I guess it is good for some things, but not all. Certainly not a piece of 18 gauge copper that measures 1 1/2" x 1 3/4", it heats up only the portion at the top, and that tip #1 is the biggest I got. I have the lampworking torches, which are HOT HOT HOT. But they all sit on stands, maybe I can remove one from the stand and use that, it gets up to 2000 F or so....at least 1800 F. But the problem for me will be how to hold on to it, it is just the cannon, and flame....there is no handle....

The charcoal idea sounds pretty good too, lots of great ideas, I know I will get it once I figure it out...and this seems like it is truly my problem, not enough heat...at least on the whole object.

I need to shine up the copper more as well. I clean it lightly, but I can see where there is room for a better more cleaner surface...

Thank you so much!
Sincerely
Laura


beadaholic's picture

something else...

I just talked to a silversmith in Taxco, and convinced him we are not in competition with him. He is going to show us how he does it. They use a pure propane torch, no oxygen. He makes his own solder. So it will be an interesting trip, we go tomorrow at 9am to his workshop (hope I can still find it) and I will take my video camera. They are so secretive, but he has agreed to show us all he knows. Yippe! I don't know if we can enamel on this type of seam, or if he is just basically fusing (better yet for my needs) but this is a good thing, either way we will learn something new. The girls are already all psyched up about it. It will be really interesting! I will post more on this experience once we get back.


Rich Waugh's picture

Good luck with the Taxco

Good luck with the Taxco trip! My guess is that he is using a propane/air torch and that will get plenty hot for your purposes.

I suggest you take a bit of your copper, flux and your solder with you to try it with his torch. Also show him what you are doing that is definitely not in competition with him. Could work out to be a great thing for you.

Rich


beadaholic's picture

Yes, I have a whole list of

Yes, I have a whole list of questions now for him, written down, we also have a few small projects put together for him to show us how to do it.

I know you can fuse fine silver, which probably is a good thing for us to learn being we enamel.

But my question is, can you fuse together copper? I mean copper on copper??

I also have written down temps because here it is Celsius, and I am very familiar with Fahrenheit. Just so I am more acurate! tee hee...

Thanks Rich!
Sincerely
Laura


Rich Waugh's picture

Yes, you can weld (fuse)

Yes, you can weld (fuse) copper, using either oxy/acetylene welding or TIG welding. Oxy/propane probably won't work due to issues of oxidation of the copper. Might, but I seriously doubt it. Difficult enough with the O/A or TIG, because copper is such a fantastic conductor of heat that it takes LOT of heat to do the job and then you have the risk of the metal collapsing completely near the weld zone.

Rich


beadaholic's picture

I thought so, I found one of

I thought so, I found one of my old books with an explaination on doing sterling fusing, and I can see where it would be a fine line to walk with the torch, to get it just right, and not have the metal lose its form, the way they do it is flux the whole top layer that you are going to fuse to the bottom, but the whole time it is the oxidation part that is fighting, and then being copper....I would like to do it, but they don't do tig welding here that I know of, and I can get acetylene and I have someone sending me a oxy/ocetylene torch (he says he will, lets hope) but here, you have to open a contract, give them $400 US and then they give you a tank, and you have to exchange it every 3 months or you lose your money, and right to exchange...ugg, hehe, oh well, I have to deal with the system like it is....but that might be something in the future.

I am ready to go, just waiting on the girls, should be very interesting...I will post pictures of anything good...hehe either way we will learn something new. Which is my goal.

Thanks again
Sincerely
Laura


bigfootnampa's picture

I have fusion welded copper

I have fusion welded copper (and silver) with only a small propane air torch! It can be done. Tricky work as excellent fluxing must be combined with quick heating and the heat must be stopped at just the right moment. Varied sized elements make for exciting challenges! Some work WILL be lost! This is not work for non-experts! I have not tried Mapp gas but it should work even better. The little torch is excellent for such tasks as soldering chain links or rings... not so good for soldering larger assemblies even of the earring size. I do love the Batterns flux! VERY clean parts are essential for good soldering. Good pickle is most useful (I use Sparex #2). Pickup small parts with a flux wetted brush and larger ones with tongs or forceps... even a fingerprint can damage the solder flow. PRACTICE is important! I have used a simple cheap plumbers torch to do all kinds of fine solder work! It is useful to have the type that has a small hose so that you can maneuver the torch without moving the bottle and also avoid the variation in flame that tipping the bottle tends to produce. Backer is important and I usually used a soldering pad of this type: http://www.amazon.com/ASBESTOS-FREE-SOLDERING-PAD-12/dp/B000HYMRF0
A good backer reflects heat allowing for quicker heating of the work which eases the work of the flux.