LOONENG Ruling Pen for Masking Fluid, Perfect Fine Line Drawing, Technical Cartography and Calligraphy, Suitable Use with Drawing Ink, Indian Ink Gouache

Thank you, this is amazing…I am new to watercolor painting and just learning about masking fluid. This pen is great when applying the masking fluid. It flows the fluid nicely on the paper. Great product!

Al principio pensé que no servía, después me di cuenta que es la mejor opción para usar el líquido enmascarador, es Perfecto, fácil de manejar, peso ideal. Súper recomendado, muy buena compra

Great for masking pen

I only got to use this one time and it worked great! Had not used anything like this for 55 years since I was in drafting class in high school. However, I only used it for masking fluid one time and when I was cleaning it, the little gold screw nut came off. I threaded it back on and put the pen back in the package it came in. When I went to use it the next day, the little gold nut was gone. I've searched for it and looked for a substitute in my vast collection of nuts and bolts and screws, etc. No luck.

Produces a fine line. I’m still learning how to get watercolor to flow while using it. I’m still getting an uneven line.

I used this both with masking fluid to mask some light reflections on cold-press watercolor paper that needed to be regular lines. Just dipped it in bottle, keeping masking fluid well below hinge piece and the screw wheel. Practiced a second to get the angle right for a nice line on a scrap piece. Once you get the angle, it flows smoothly, and the weight is nice and feels balanced in your hand. Lines are clean and smooth, and the tool holds way more fluid than I had expected. No trouble with drips, and the wheel is great for adjusting the width of line as well as for clean up.For clean up, I used just a barely damp paper towel (damp from wiping my brush after painting and dip rinsing in clear water), and you couldn't even tell it had been used.Tried it out with some watercolor paint from a palette well to smooth a line in places, and it worked like a dream. Again, just dipped, gently and quickly stroked outside once against clean edge of palette well. No drips, no need to put in with a brush, at least for me. Clean up still fast and easy no residue. Excellent product.

It does the job for me, but isn’t the best quality. I wish it made a really , really thin line, but the price was right.

What I love:1. It goes on smoothly2. It adjusts between very fine lines for hair to thicker lines.3. It cleans up completely and saves fine brushes.4. The reservoir makes it possible to draw several fine lines before needing to dip again. This makes it quick so you can put the cap on in less time, therefore preventing the resist drying out.5. I have only used this with Pebeo resist. I can't say it works as well using other products, because I haven't tied it with any other brands of resist.I am one happy girl! This reduced tons of frustration!