Leinuosen 3 Pack Conductive Ink Pen for Kids Circuit Pen Conductive Paint Kit for Adults Circuit, Science Experiment, Science Projects, 3g

Excellent for fixing the bad contact of buttons in remote controls and button panels.

I'm a hardware engineer. I needed some of these in a pinch and these were available in the timeframe. I had a relatively simple need to retrace a membrane for an old joystick. Anyone who's dealt with those knows that the traces are pretty wide. While I'm a pretty steady hand, able to solder and do everything else I need to without issue, I couldn't maintain a proper flow with this and the lines are extremely wide. Maybe this would be fine for a kid on paper to learn about... Wait... no... don't even get this for your kids. It's not any good. I have some Circuit Scribe on the way. That stuff works properly. Alas... these joysticks have to wait until Sunday. I won't make this mistake again.

Great activity for kids or adults! Shake to get the pen started. Ink begins to flow allowing for flexible projects. Had an issue with some pens arriving damaged- but was quickly provided with a replacement.

Bought these so I would have enough for more than one kid to draw circuits. One of the three pens wrote a little bit and then quit. The rest were DOA.

About 4 usable inches in each if the tip doesn't fall off upon opening.Purchased for commercial use and did just what we needed. Works great, but pen is almost empty to start.

I was not able to get this product to work. I tried multiple surfaces, single and double coats, and extended drying time, but was never able to get a conductive reading with a multimeter

No me agrado puesto que este producto no sirvió, no hace continuidad alguna y el problema que me ha ocasionado con la persona a la que se lo envíe...

Bought these because I love circuit scribe conductive pens. I wanted something with smaller tips than circuit scribe though, as the standard ballpoint pen tips on those are just a tad too big for some things I do. These had thinner delivery tips. However they are sharp flat and scratchy tips that scratch the surfaces and don't allow the pen to deliver the conductive ink without messing up the traces. (If the ink comes out at all). They clog easily, don't deliver the material consistently, and are terrible. I wanted to like these. I wanted them to work. You undo a clog, and it's back in a few seconds. They are basically unusable on pcbs. Even expirement projects like plastics, hard fabrics, even paper!!! You can get them to dot kind of well, however the gold material is way too thick when compared to how easy the silver is with circuit scribe pens. Those are so much better. Returning.