Amazon.sg:Customer reviews: Slobproof Touch-Up Paint Pen | Fillable Paint Brush Pens for Interior Paint Touch Ups to Drywall, Cabinets & Furniture | Store House Paint, Wall Paint & Wood Paint Fresh Inside for 7 Years, 2-Pack
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I bought these when we had moved some furniture which had scratched some paint on the walls. They worked great to touch it up, you can’t even see the spot anymore. However, cleaning them is quite difficult, and if you don’t get all the paint out of the brush part it hardens during drying making it useless. That’s why I deducted 1 star. Apart from that they are great for small touch ups.
These pens have a twist plunger that slowly forces paint to the brush. They have an internal ratchet mechanism so the twisting goes by small "clicks" to limit how much paint might be forced out with a single twist. The instructions say that you can "untwist" the plunger and refill the pen.
You can do that, and the pen will still work when refilled. HOWEVER, the internal ratchet mechanism is all plastic and not designed for untwisting. It's made of plastic and will invariably shatter at some point during the untwisting. As a result, there are no more of those handy small "clicks" to help limit how much paint might be forced out with a single twist. It still works, but you need to be a bit more careful when using a pen that has been refilled.
I love this idea! Super easy to use. Works well. The brush fills back up with paint after you clean it out so I’m interested to see how it lasts long term. It does have a cap though so I have high hopes