Brazing kit


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littlebeaver
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Brazing kit

Postby littlebeaver » Sat Apr 04, 2015 8:33 pm



:shock: I did something today I have been wanting to do for a while now, get a brazing kit, it's about $70 at lowes, I was Man shopping today as the girls were Female shopping at other stores, I have used a cutting torch many many times at work and a arc welding machine too... but I have never had the chance at brazing,, I am sorta skilled with tools and such so I feel I can braze, I wish to braze aluminum and Steel.. I wish to get good at it.. I will get good at it..
I'm gonna have fun playing with this,, anybody else have this kit? tell me about it Please.. :D

I love this guy,, He uses bricks,, Caveman for sure...ha ha ha


Last edited by littlebeaver on Sat Apr 04, 2015 8:47 pm, edited 1 time in total.

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HawkeyeGL1200
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Re: Brazing kit

Postby HawkeyeGL1200 » Sat Apr 04, 2015 8:47 pm

Once upon a time, in a land far away, I was a pretty good arc, MIG and TIG welder. That was 30 years ago, and since I have rarely had occasion to use those skills in my current occupation, I've lost my touch. I'm still a passable stick welder, but nothing like I was when I was 25 years old. I never got the hang of gas welding or brazing. My Father was a master at the fine art of gas welding and brazing, and as a child and into my teen years, I watched him do magical things with brazing rod and bare metal (coat hangers often enough) wire with some flux.

I recall visiting him at work once when the boiler had frozen in the dead of winter due to one of his coworker's forgetfulness. The man shut down the boiler but didn't drain the water from the boiler after shutting it down. There was a crack in the water jacket about 6" in length. Dad drilled a hole in each end of the crack, to keep it from getting longer he said. Then he repaired that cast iron with a coat hanger, some flux and the skilled hands of a seasoned gas welder. Dad had welded bomb casings during WWII and was a capable welder in his own right. I tried gas welding a few times and gave up in frustration. I learned to weld cast iron with an arc welder... something I was told by many that was impossible to do and have it hold. I guess when you don't know any better, you can do most anything that is impossible... I welded the "feet" back on a cast iron gear box with some E309 stick rod and as far as I know, the feet are still in place all this time later.

A person who can gas weld or braze can do many things that are difficult with an electrode. If I were a gambler, I'd place a bet on your ability to master the fine art of the gas welding torch. You are gifted in the way of figuring things out and have a very inventive mind... two character traits that will take you far in life.
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Re: Brazing kit

Postby littlebeaver » Sat Apr 04, 2015 9:00 pm

well gosh darn,, thanks Hawkeye...You are too kind sir....I love the story about your Dad... I always admired men that did this type of welding... when I saw it in the store I got excited,, You can get new bottles right there at lowes too... this is my answer for my small projects,,, Example, I wanta make some stacks for my tent, good one's made of steel with a hook on the end,, I can weld a hook on the end now...Oh boy all kinds of stuff I can make now... I didn't want to spend too much on this stuff.... :D

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CMReynolds1
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Re: Brazing kit

Postby CMReynolds1 » Sat Apr 04, 2015 9:25 pm

Beav, How does brazing differ from welding, asked to no nothing novice!
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Re: Brazing kit

Postby CMReynolds1 » Sat Apr 04, 2015 9:26 pm

I meant to correct the last, 'know nothing novice'...........................
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Re: Brazing kit

Postby littlebeaver » Sat Apr 04, 2015 10:48 pm

Jeweler's braze I think :shock: and Iron workers weld... :lol: Arc welding, or stick weld is created by electricity, brazing is by heat alone.. flux is on a Arc welders stick.. I think :lol: :shock: this is a really good video, I got a lot out of it... I enjoy learning new stuff...


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Re: Brazing kit

Postby MikeB » Sat Apr 04, 2015 11:31 pm

I had a kit like that once upon a time. The oxygen would get used up so quickly during any process that I got frustrated and stopped using it. The oxygen cylinders are way too expensive. After putting that kit in the round file, I bought an Oxy-Acetyene regulator set up and bought a tank of Oxygen and a tank of Acetylene. Much more to my liking for gas brazing and some welding. I don't do much gas welding or brazing anymore.

I'll TIG something if it needs to be stuck together. A buzz box (AC-DC ARC Welder) with a TIG torch, some tungsten and some Argon is about all you need to do stainless steel. Aluminum welding takes a LOT of current and I don't have a large welder with ARC stabilizer to use here at home so I would do that at work when needed.
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Re: Brazing kit

Postby littlebeaver » Sun Apr 05, 2015 12:21 am

wow , I hope it last long enough for a few good tries at it... I can see why that could be frustrating... :shock: I might need to go get a few bottles of oxygen , My guess would be 3-4 bottles to one MAP bottle... am I close...If I learn how to braze proper with this small torch, I too will upgrade but for now it's a new toy... :D

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Re: Brazing kit

Postby themainviking » Sun Apr 05, 2015 6:47 am

CMReynolds1 wrote:Beav, How does brazing differ from welding, asked by a know nothing novice!


Welding is the joining of two metals by actually melting them together, and the weld is often stronger than the metal it has joined. Brazing is the joining by adding a diss-similar metal to the others, like a glue, but chemically heated to form a bond, and is never as strong as the metal it joins. Welding is done with electricity (hence the term ARC Welding when a small electric arc melts the metal), while brazing is done by fuel and the subject metal is not melted, but only heated enough to bond with the brazing material, normally bronze. With enough heat, welding can be done with fuel, but it normally needs an Oxygen/Acetylene fuel to reach these temperatures.
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Re: Brazing kit

Postby CMReynolds1 » Sun Apr 05, 2015 8:14 am

Thanks to all for helping me understand the difference. My expertise is steam, electronics, and electricity. I appreciate the education.
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Re: Brazing kit

Postby dingdong » Sun Apr 05, 2015 8:38 am

Hey Beav. I have had the same set for 20 years. Buy a couple of extra bottles of oxygen. Those small bottles last about 15 minutes.
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Re: Brazing kit

Postby littlebeaver » Sun Apr 05, 2015 11:23 am

I figured that after what MikeB had said, well shoot... :o I was looking at the Lincoln Arc welders, man, we had one a long time ago...I'd have to wire up 220 outlet to my garage for that... I was also looking at the less expensive arc welders for about $100.00, anyone have a cheapo one, do they weld ok for small projects, I know the Lincoln is good....

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Re: Brazing kit

Postby HawkeyeGL1200 » Sun Apr 05, 2015 11:38 am

I've got an inexpensive (120 volt) machine that I bought several years ago, and I've also got a wire feed machine. The 120V stick machine works fine for thinner metals... like 1/4" or so thick... It is consistent and easily adjustable with a dial to change amperage. I can run it with a 12 gauge extension cord if I need to... it just isn't designed for continuous use (obviously) but works fine for what I'd call homeowner jobs.

I've used the flux-core wire feed machine (Made by Lincoln) which also runs off 120 volts, to weld a number of projects. I would prefer it to have a shield gas, as the flux core weld is not as clean as a MIG with shield gas... but it works for stuff around the farm.

If you're planning to weld thicker metals, it is probably worth installing a 220 volt receptacle for the machine. I had one years ago with a 220 Dryer plug on the end that I was able to use when the Mrs. wasn't using her dryer... I had a really nice shop back then, and I miss it, but the older I get the less inclined I am to tackle bigger projects. I do miss having a CLEAN concrete floor to work off...
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Re: Brazing kit

Postby robb » Sun Apr 05, 2015 1:26 pm

I'm used to MIG, Stick and Tig and Torch welding, whichever is best to get a particular job done. Been gas welding with torch since I was 10 years old making farm repairs. Can say that brass as well as a clothes hanger can have a massive holding force. Torch rig can maintain better heat control if larger items need repair. Brass for cast and aluminum and hanger for all metal and exhaust projects. Get some paste and braze new carbide teeth on saw blades, them 30-36" blades are very expensive and new teeth are affordable.
Have a 120 vac 140 amp AC/DC arc welder and a 120 Vac Miller Wire welder that are taken to the project since 240 vac is usually not an option. Tig welder is 240 Vac, but recently tried a add-on 120 Vac unit that worked great with the AC/DC welder. If you want to work with steel larger than 1/4" a larger welder is needed unless you are proficient at welding.

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Re: Brazing kit

Postby littlebeaver » Sun Apr 05, 2015 1:49 pm

I'd like to learn to braze aluminum, I have Arc welding many times, I have used a cutting torch many times, I know how to clean the tips ect. It's been a good while... My first job was building grain bends in Castroville Texas... we cut and welded all sorts of stuff... I might just get that Lincoln too... I'm used to arc welding, I'll probably stick with it,, I just wanta learn a new thing is all...how to braze...I have the copper solder thing down for plumbing....

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Re: Brazing kit

Postby themainviking » Sun Apr 05, 2015 2:24 pm

Aluminum with a torch is really touchy. The difference between braze heat and turn the work into a puddle is not very many degrees of heat. Maybe a hundred degrees difference between braze and puddle. It needs practice and great care. Maybe should not practice on whatever you wish to repair. Get some aluminum welding rods that melt at low heat, like Alumiweld 730 rods from Harbor Freight Item #44810, they cost about $14 bucks for an 8 pack, or you could get some HTS-735-II welding rods that can be ordered from http://www.weld-aluminum.com/ but they sell in larger quantity. The rods melt at a lower temp than most aluminum (aluminum melts at 1220 deg F, but brazes at about 1000 to 1100)
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Re: Brazing kit

Postby littlebeaver » Sun Apr 05, 2015 2:34 pm

Already on it,,, That's my exact plan...Thanks

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Re: Brazing kit

Postby robb » Sun Apr 05, 2015 3:07 pm

For light weight or thin repairs with aluminum I use A-LUM-ITE fluxless repair rods. Very low heat, 715-730 degree, for aluminum and zinc alloys. Simple propane torch and even I can weld holes in a Pepsi can. Lifesaver for new radiators to save the plastic.
Like said, get some scraps aluminum and steel cans from food and play.

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Re: Brazing kit

Postby littlebeaver » Sun Apr 05, 2015 3:20 pm

Thanks, I shall explore all avenues... :D

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Re: Brazing kit

Postby seelyark1 » Sun Apr 05, 2015 9:08 pm

The guy in the video was right about one thing. He knows nothing about welding. Brazing is similar to soldering. Welding is joining the pieces by melting and adding filler to the metals to make them one. Welding aluminum takes an AC hi Frequency set up. Brazing aluminum with an aluminum rod that is of low quality and takes little heat to melt, are of not much use for strong materials. There are some aluminum stick rods, but put out low quality welds. In a few years they may make some that will work better.
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Re: Brazing kit

Postby littlebeaver » Sun Apr 05, 2015 9:16 pm

Thanks, seeing things from all different angles helps me figure out the path I wish to take...Your talking about the Caveman guy with the bricks right? :lol: Oh mercy..lol

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Re: Brazing kit

Postby robb » Mon Apr 06, 2015 11:22 am

seelyark1 wrote:There are some aluminum stick rods, but put out low quality welds. In a few years they may make some that will work better.


NAPA sells a high quality aluminum rod for arc welder that produce good welds on 1/4" to 1/2" plate. Any quality wire welder that can use 0.035" wire can do great for aluminum. For small repair and playing might look at a fluxcore wire welder, no gas needed.
I been welding for 50 years and still have testy weld days, especially with aluminum. The cleaner the product the better the results.

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Re: Brazing kit

Postby littlebeaver » Mon Apr 06, 2015 11:54 am

Wow, Thanks again for the useful information.... :D

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Re: Brazing kit

Postby littlebeaver » Mon Apr 06, 2015 1:07 pm

Here's a young man learning the process


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Re: Brazing kit

Postby littlebeaver » Mon Apr 06, 2015 5:21 pm

I have a question,,,,, I use bandsaw blades often, sometimes the blade will break after a long time,, it just does,,, especially the scroll type blades, how would you Robb weld it back? Or anyone else could chime in.. I know I'd have to grind it smooth but how would I repair it..?




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