CircuitWorks CW8100 No Clean Flux Dispensing Pen, 9ml

Clean, easy and no stink, Will make all your soldering jobs much easier and accurate than paste with no smoke and goop everywhere. The tip is like a flat chisel point so you can spread over a 1/8" area ta a time or turn it on its side for the very detailed work. Been using it a ton and haven't had to replace it yet. and it doesn't leak outside of the cap either. The tip pushes back int the pen to soak the tip and it works in all temps.

It might be expensive than other flux but is a good product and the fact it is in a pen like design is awesome so you can put it on the exact spot or area you need it on. This is worth it even if you a weekend soldering warrior you would enjoy this product. Just remember that you have to press lightly for it to flow out if you press to much then you will have flux everywhere. Just wanted to say it because there is at least one person who will press it fully on the surface then complain about the mess.

Product works just fine. Used it to remedy a PS3 YLOD. You have to coax the flux to flow under the CPU/GPU by tapping the felt tip on the m-board, but it wasn't too troublesome to use.

So much easier than using flux paste and keeps my very small soldering bright and strong. Allows for direct application to exactly the smallest pins or pads all the way up to large gauge wire. Kester solder appears to be the best with this flux and I don't have to worry about any bridges or removing excess flux. Highly recommend this for anyone doing any soldering, especially precision soldering.

I bought this liquid flux pen for work on printed circuit boards. The dispenser is a fairly stiff wedge of plastic that is spring loaded so that when you press the tip to the work, liquid flux is released and flows down over the tip and onto the material to be soldered. Unlike some other devices of this type that I have tried, the liquid does not flow out so fast as to run over the work and be wasted. If you keep your parts clean and degreased and use good quality solder, you won't need this often. But when you come to that solder pad that just won't cooperate, this pen is really handy. It leaves only a modest amount of residue which can easily be removed with alcohol, if desired. It is always a pleasure to use a product which does just what it says it will do. Liquid flux always seems a bit pricey but this one is effective and one pen should last a good while. Highly recommended.

If you repair electronic circuit boards you know how messy most liquid flux can be. I thought I would give this a try and am so glad I did. It really works as advertised, providing flux to clean the connection while minimizing the flux residue. It has a felt tip that is spring loaded so you only dispense the flux as it is needed. This is a product I can highly recommend.

Did not work. Caused solder not to stick.

The safety precautions on the cardboard shipping package were very intimidating - don't get on shin don't get in eyes avoid fumes. I wish I had seen these when purchasing. BUT I really did need a flux I could put directly on pads of SMT parts and the dispensing mechanism of this product worked great. And I was happy that it does not corrode the electronics over time. I was confused in that the product says organic yet is toxic enough so as to require intense warnings. I'm glad they were posted on the package and these warnings did have the affect of making me more careful about safety. All in all I was glad I purchased and it seemed to do the job fine. But people should know the safety concerns WHEN buying, not after.