#312 Flux Pen Low-Solids, No-Clean 10ml - Refillable

Seemed to work as expected. Haven't soldered anything for 30 years but old habits come back quickly. Pen was shipped well and seems to be a quality product.

Pros: Works well, easy to apply, no mess Cons: None I ordered this soldering flux pen as an alternative to the rosin-based solder I was using. I figured this would be a much easier way of applying solder quickly to wires and PCBs and would speed up my solder jobs since it doesn't need to be cleaned up. I was completely right; this thing is a huge time-saver. A quick dab on a PCB solder pad and a quick swipe across the tip of a wire and the solder flows and sticks just like it would had I used the rosin flux. The pen is super easy to use as it's basically a flux marker. To get it started, just press down the tip against a solid surface and the flux flows easily out of the pen. The back of the pen has a removable cap that makes it easy to refill the pen when the flux runs out. The flux used in this pen is quite nice. It's thin enough to quickly and easily coat PCBs and wires and leaves no mess. It's non-corrosive and non-conductive, so you don't have to worry about cleaning up afterwards. There's 10ml of flux in this pen so it should last quite a while before needing to be refilled. It doesn't have a strong or unpleasant smell but can come out of the felt tip quite quickly if you're not careful. I'd say this pen is a must-have in any soldering kit or toolbox. Overall, I'd say this soldering flux pen is totally worth 5 stars. It works great, is super easy to use, and leaves no mess.

I’ve never owned a flux pen before. This has been amazing. It’s so much easier to control. It fits nicely in my hand and the tip retains the flux nicely so it doesn’t dry out between solder sessions. The no clean flux is a game changer as it doesn’t leave a mess to clean up later. It functions as expected and is a good value for the money. I would definitely recommend this and will be buying another one for my to go bag.

Value for money, great build quality, functionality is as it should, size of paint marker, flow speed is good, ease of removal of extra flux

This flux pen is my go to for Field and desk repair when I work on drones.