3 Set Chemtronics CircuitWorks CW8100 No Clean Flux Dispensing Pen, 9ml

It's twice the price of cheaper pens, but nothing lasts like this. I have a pen that I bought in 2013, used a few times and misplaced. Found that recently and it is still fully liquid and usable. Prompted me to get another one of these.

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.

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.

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.

I had trouble getting the pen to push out liquid. I had to push hard on my motherboard just to get some liquid out of the tube. Next time I will just by the bottle and drip it into the locations that I need to place it. Instead of pressing all over the motherboard trying to get the pen to work. The product was good quality and when the liquid came out it helped with the reflow.

If you know what the Sony PS3 Yellow Light of Death is then read on. I tried many fixes to get my PS3 working again. NONE worked. I finally broke down and purchased this No Clean Flux + a Heat Gun. Used the flux in conjunction with the heat gun on the GPU & CPU. Let the system cool over night, and my PS3 fired right up the next morning. My PS3 has been working fine since I applied this fix over 4 months ago. However, 2 days ago the YLOD came back. So I will try the fix again. Either way the product works and I gave it 5 stars for that.

It is a bit expensive for what it does. Seems like all of these products are too costly anymore.