Features:

  • The ideal flux for electrical and electronic repairs
  • Contains 2 ounce in a "hockey Puck" jar
  • Formulated for use with tin/lead and lead-free alloys
I was going to order a syringe flux product before I watched a lot of soldering videos on You-Tube;

After researching smt soldering flux options online, I was just about to purchase a syringe delivery type flux product purported to simplify smt rework. However, after closely viewing a significant number of soldering technique YOU-TUBE videos, I came across one where a tech was using good old, tried and true, rosin paste flux and easily applying it with a metal pick tool. Whereas the syringe fluxes were used in most of the videos, after seeing the tech easily apply a controlled small amount of paste flux with a pick and further seeing the same quality finished solder connections, I decided tried and true was actually better than new. Although some syringe products seem to form an preliminary bond that holds the small smt components in place, I prefer to tin a pad and tack the component, especially when syringe flux products have expiration dates and tried and true does not. I highly recommend tried and true, ROSIN paste flux for all rework electronic soldering. Order arrived promptly via US mail. (3 days) Very satisfied with this purchase

Your solder isn't buttery smooth?

This stuff works amazing. The solder I use sometimes wouldn't melt and bond to itself and would cause it to like harden on my soldering iron even when it was hot or on normal heat. But this stuff keeps it buttery smooth and bond to itself soooo easily. It basically turned 3 hours of frustration into 30 minutes of simple projects. If you're about to quit soldering or working on a project that you're gonna give up on, give this a try before you do. I can focus more on flying my quadcopter or enjoying the fruits of my labor more with this stuff.

What the flux

It's flux. It works like it should. It's more dense than many fluxes I've used, which is good, that means it will take less for the same job. You can thin rosin flux and use it as a liquid, all you need is a solvent like isopropyl alcohol or acetone and add a little flux until it's the consistency you want, then use it. You can create your own flux with solvent and rosin for violin bows. If you really want to make it from scratch, I've heard of people using pinecones, or something like that (I'm old and have put my fingers in my mouth too many times for too many years after solder splatters or stray irons, I don't remember things well).

Makes the Difference Between Novice and Pro

I'm a software engineer, which basically means I don't know how to solder but occasionally try. I picked up my first prototype board for a project and a coworker recommended using flux. This stuff is magic. The solder flowed onto the leads and pads. No more nasty solder balls. The solder is waxy and I applied sparingly using a toothpick or by dipping the leads.

Make soldering faster

I always thought that because solder comes with a rosin core that using flux was not necessary. While technically it isn't using this stuff liberally over the area you're going to work on makes the job so much faster. Joints accepted solder quickly and desoldering was much faster. The paste may seem stiff at first. I just stabbed at it with a toothpick and it was easy to spread wherever I needed it. Just use isopropyl alcohol to clean it off the boards when done.

Good general purpose flux

Great flux! I use it both applied with a pick, and I've filled a 30ml syringe with it. Both methods work fine. I have some LEDs on a ribbon that have been sitting in a humid environment for 6 years. They are difficult if not impossible to solder due to corrosion. This flux eats right through that corrosion so I no longer have to sand the legs of the LEDs. Good stuff. And the solder flows much better with this than without it.

I never understood how many get the perfect soldering and so evenly until I saw a youtube ...

I have never really soldered until recently. I never understood how many get the perfect soldering and so evenly until I saw a youtube video that specified this particular flux. I am so glad I decided to buy this because just like the video stated after heating up the wires and the flux, the solder just melted like butter and so evenly. I would recommend this product to everyone. I am never soldering again without flux.

My grandkids will be using this container of flux long after I die

Seriously, this is so much flux. I had no idea before I bought it, and I thought it was expensive but I needed it. I've used it with abandon and barely made a dent. Oh, it is also pretty good stuff. I know I shouldn't breath it, but at least it smells good when it burns instead of smelling like gross chemicals. It makes creating good solder joints stupid simple. Don't bother buying the stuff in a syringe. You can just dab this on with a toothpick, or (like I do) with the tip of one of those blue-handled, double-ended soldering tools they sell here on Amazon. Who cares if you use too much, it will last you forever. Another trick is to melt it with your soldering iron until it is fluid, then gently pour it into or suck up up with your own syringe. You can buy bulk syringes easily here on Amazon, or on eBay. I haven't tried that, but I'd like to if I can find a spare blunt needle to use. The flux will re-harden and work just fine after you melt it, but there will be a LOT of fumes :)

Rosin paste flux

This rosin paste flux works well for precision electronic PCB and wire soldering. I prefer paste over liquid because it is easier to apply - use a small acid brush or Q-Tips. Make sure to clean residue off with isoprop alcohol (=rubbing alcohol) after finishing the soldering to avoid long-term corrosion that any flux will cause. This flux in particular helps tinning old wires and facilitates perfect joints when soldering on oxidized and/or cheap circuit boards (i.e. most consumer electronics and appliances). I'll purchase more of this when my current jar runs out.

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