Can you SOLDER a copper joint with a 5$ MINI-TORCH? | GOT2LEARN

Can you SOLDER a copper joint with a 5$ MINI-TORCH? | GOT2LEARN

We all know you plumbers and
do-it-yourselfers out there use soldering torches and all, but could you
actually use one of these the solder up a joint? In today’s video, we’ll both find
out. Alright so I thought it would be a cool idea to put this little gadget to the
test. They claim you could do “household repairs” which to me, sounds like
soldering so that’s exactly what I’m gonna try to do with it today.
A normal plumbing torch could reach a maximum temperature of around 2,000
degrees Celsius or 3,600 degrees Fahrenheit and this little guy only gets
up to 1,300 degrees Celsius or 2,400 degrees Fahrenheit which leads to think, will this mini torch really work? The
only way to find out is to try it so what I have in front of me is a
ready to solder joint. Both the fitting and pipe have been cleaned and fluxed, the
only thing left to do is to heat it up and apply the solder. If you’re new to
soldering watch my “how to solder” video it’ll give you all the instructions on
how to properly solder a joint and just makw you better understand what I’m
doing here today. So let’s light her up and start soldering. As always, start
heating from the bottom and work your way up. On the torch’s packaging, they say not to use the torch for more than five minutes, so we’ll keep it safe and try to
get this joint done in under five. So obviously this took a lot longer than
it should but considering its size and price tag of five dollars, this little
gadget did the job just fine. Now, this test wouldn’t be complete if we didn’t
test the joint, so here goes nothing. And it held up! So if you’re looking for a
mini torch on the market that’s capable of soldering a copper joint, this is what
you’re looking for. If you guys found this video fun or helpful, give it a
thumbs up and if you’d like to see more videos in the future
subscribe to the channel. Until the next one, thanks for watching!


  1. Seemed to work pretty good. By the way that pressure test wasn't really accurate as there was air in the pipe which can be compressed. Have to bleed the pipe first since water is not compressable and will pinpoint leaks.

  2. Wow that is so clever! Cool thing to do if your stuck, at least it's cheap and it works 😃👏🏻👍🏻 Good job !!!

  3. The thing about soldering copper is coppers thermal conductivity. That's the way copper absorbs and transfers heat. .you can solder copper with a bic lighter as long as it's a small amount of copper. It will absorb and distribute heat until the point where the heat fills the area so much that the copper can't keep up and then heats up enough to melt solder. The thing about heat is that it's always rising.. So the copper will be constantly absorbing and distributing the heat while the heat is constantly rising and escaping . Thats why you can't get a whole stick of any size or type to get cherry hot or even warm if you heat only one end of it cherry hot. The copper will try to suck it all up and distribute it to the other end but will only go so far because the heat is always rising. There sre other factors to consider too , like convection/radiation (?) Where chsnges in temperatures pulls heat or a breeze will pull heat off, stuff like that. It may not seem like much but it can make a big difference in penetration or the amount of heat needed before solder flows. Another thing that will cool down a joint quite a bit is when the solder is introduced. It can be seen with a naked eye when brazing. Anyone who's ever brazed copper using sil=phos 15 or whatever (ive been brazing for many years and I just found out they make a 0. ..and it flows pretty good, better than the 5). Once the whole joint is glowing orange, as soon as the rod is introduced, you will notice a shadow move into the joint like a wave. Many people mistake that wave for molten rod filling the joint. Those who have ever got their brazing cert for medgas piping and relied on that shadow as if it was penetration when brazing up their coupon to send to the state , they get heart broken when they cut that 12 o'clock section out to reveal the "holiday" at the bottom of the joint and all that time n prep …and material was wasted. That shadow is the copper cooling down .from the lower temp of the rod. Heat follows cold so the heat runs onto the rod which cools off the copper enough for it to lose some of the orange color. …

    Bottom line, dont expect that torch to do much more than that. I assume you're using type M? I doubt it would get much penetration on a 3/4"Ø type L joint. ..outside. or in front of a fan. Cool video tho. Keep 'em coming..

  4. Wow buddy, this video is really cool and interesting. I like your idea of testing new products.
    I learned something new today, i never would have thought this little gadget would be able to do that.
    Thanks and have a great day 👍

  5. Lots of "conventional" propane torches sold on eBay under $10; self-igniting "models," for less than twenty….! Of course, one has to buy a propane/MAP cylinder but….. There's always a Shark-bite fitting instead or a wise switch to Pex. Totally strapped for $$, sell the tool afterward….., and/or drink bottled water…..filled from a neighbour's tap….

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