Fiberglass Scratch Brush Pen - 3 Pack - Jewelry, Watch, Coin Cleaning, Electronic applications, Removing rust and corrosion

The glass fiber brushes are a useful tool to remove rust or other oxide layers from metals, clean up contacts, prepare metal or plastic surfaces for glue or epoxy application. The fiber tip is approximately 1/4 inch diameter allowing for precision work. You can modify the abrasive action of the pen by the length of the exposed fiber bundle (short equals more abrasive action, longer equals softer abrasive action). These pens have a long lasting supply of glass fiber that can be advanced by rotating the rear cap of the pen. That supply - for my use cases - lasts over six months. Overall, a very useful, well-made gadget to clean and (intentionally) scuff hard and soft surfaces. And the price is right. I will certainly buy more (in a few years, because these last a good while). Highly recommended.

I had a cartridge video game that I purchased with spots of corrosion on the games line of contacts. Made there by what kids do to appear to get the game to run, blowing on those prongs. But this is not how you clean, or fix a finicky game. But I used the fiberglass scratch brush, one of 3 included, and it really worked to clean off the spots of corrosion. Of course you need to realize using it on a delicate thin contact strip, could go right through rendering the high priced game rubish. But it worked well, very well. For a reasonable price I have 3 brushes that should last an eternity.

This is a great set I’m going to use them for my wood projects, but you can use them for jewelry, watches, coin cleaning, tight places, electronic applications, removing rust and corrosion, and so much more. They’re a great price and will last a long time for me. I recommend and will buy them again.

Work okay, really have to work them to do anything as it is like a brush, not really good for removing solder mask unless you want to rub on it for several minutes. Build quality could be better, very flimsy feeling and the end comes loose often while using. Still works good for VERY light work if that is what you need them for

I use these to clean electrical contacts and circuit board traces. They are great for that. They work as you'd expect and I will buy more when I need them.

These are great for cleaning electrical contacts, if need that sort of thing.

These clean all kinds of contacts...brass, copper, steel, etc. Very good tool and when the end starts to wear or get too dirty, just trim off a wee bit with a sharp utility knife and it's good as new.

These are inexpensive, light, functional (mostly) and aren’t initially frustrating to use. A couple of turns of the bottom knob to feed more fiberglass threads and you’ll soon realize why this is 1/3rd the price of the name-brand Japanese version available here. The enclosure seems fine but after using it for a bit you realize how inexpensive and moderately brittle the plastic ‘pen’ portion of the scratch brush is. You can easily strip out the threaded screw that move the fiberglass assembly up or down, leaving the system less functional. Often, after a bit of use the fiberglass brush assembly and threaded screw mechanism can pop-out of the bottom with only moderate angular pressure on the tip. It sounds like I am dogging all over this kit and I kind of am. However, if you are gentle and don’t press really hard on the tip/brush end, you should be OK. I use it for PCB’s and it doesn’t stand up well to this even though is states it can. For light hobby work it 3D printed parts that require only light adjustments and alterations? I might work fine and the price is reasonable.

Simon, from YouTube's Si-Finds mudlarking videos has used these fiberglass brushes to clean dirty artifacts. My husband enjoys metal detecting and magnet fishing so I got these for him to play with. He used one on a dirty coin and it really did a great job! Be careful, though, because the fiberglass bristles can leave painful splinters.

cumple con lo anunciado funciona muy bien y limpia metales de suciedad fácilmente. muy recomendable.

I liked the product.

Un buen producto a buen precio, solo que la puntilla si es algo gruesa, como de 4mm la requería más pequeña pero con práctica de puede realizar trabajos para pequeñas areas

They work amazingly well…wish I knew about these years ago…work as described