uni POSCA 8pk PC-3M Water Based Paint Markers Fine Tip 0.9 -1.3mm in Assorted Colors

A: Hello, thank you for your question. Unfortunately, POSCA Paint Markers do not reliably work upside down. Like most water-based markers, they rely on gravity to feed ink to the tip, so when held upside down (tip above the barrel), the ink flow can become inconsistent or stop altogether. A better option if using upside down would be a pressurized Ink marker such as permanent markers. However, these tend not to be the greatest for detailed art. I hope this helps, and good luck on your project!

A: I wouldn’t personally cause it may be hard to clean off but… if uts permanent then I guess it’s okay

A: Yes it might not come out

A: No they aren’t, if you wash them it would mess up how it works with the paint

A: to ri can you elaborate on that please what do you mean it would mess up the paint to nana as far as i've used them they aren't washable. Hope it helps!

A: Hi! Yes, our POSCA Markers can be used to draw on leather boots however since these are water based we would suggest a sealant to use afterwards.

A: ya but you should use a sealant type thing after because the pens are water based

A: Hello! The marker tip is bullet shaped so at the smallest point it's 0.9mm and at the largest it's 1.3mm. And yes, the bullet tip is reversible! To flip it, pull it straight out of the marker, flip it

A: you need to pull out the marker ink thingy and flip it over

A: Hi Chris, Yes, the uni POSCA markers can be used on polylactic acid 3D printing plastic. For best results, the surface should be prepped beforehand and sealed when done to ensure durability.

A: Hi Jenny, thank you for your question. POSCA Paint Markers are water-based, which means they’re non-toxic and easy to clean up on non porous surfaces. They use pigment ink, so the colors are opaque, vibrant, and sit right on top of surfaces, much like paint. Unlike watercolor paint, which is transparent and reactivates with water, POSCA markers dry to a matte, velvety finish similar to gouache, and the ink becomes water-resistant once dry. This makes them great for layering, just like acrylics, without smudging or blending into the layers underneath. While they’re not fully permanent on their own, sealing your work can make it long-lasting and even more durable. Good luck on your project!

A: Thank you for your question! POSCA paint markers are a great alternative to Sharpies, especially if you're using them for arts or crafts. Unlike Sharpies, which are alcohol-based and tend to bleed through paper, POSCAs use water-based acrylic paint that doesn’t bleed through most types of paper, making them a great choice for sketchbooks or layered artwork. As for permanence, POSCAs are permanent on porous surfaces like wood, paper, and fabric once dry. On smooth surfaces like plastic or glass, they’ll stay put unless scratched or wiped with a damp towel and/or cleaning agent—but you can seal them with a clear coat if you want your artwork to last. Sharpies, on the other hand, are more instantly permanent on non-porous surfaces without needing any sealing. I hope this helps, best of luck on your project!

A: Hi KP, thanks for your question. Yes, POSCA paint markers can be used on an outdoor bench as it adheres to many surfaces. POSCA markers work on wood, metal, plastic, and more. However, the paint is not UV or waterproof without a sealant. On outdoor surfaces, it will likely fade or wash away over time unless sealed with a clear, waterproof topcoat to ensure durability.

A: Hi KJ, thank you for your question. uni POSCA sets are currently sold in multiple colors only. Let us know if there is anything else we can help with for your project!