Uni Pin Fine Line Drawing Pen, 0.1 mm, Archival Pigment, Water-Resistant, Low-Bleed, Ideal for Micro-Detail & Shading - Sepia

Archival pigment means the ink is designed for longevity with high lightfastness and resistance to fading. Water resistance helps keep lines legible even if you accidentally smudge slightly or apply light moisture. This is especially valuable for journals, planners, and mixed-media work where longevity matters.

Bleed is minimized with the pen’s design, but you’ll get the best results on smooth, bleed-resistant paper. Use light, controlled strokes and test on a scrap piece first. Avoid pressing too hard and allow small layers to dry before adding more ink.

Smooth, bleed-resistant papers such as quality journals, planners, and drawing paper are ideal. Lighter-weight printer paper can work, but very rough or highly absorbent papers may cause more feathering. Aim for papers in the 60–120 gsm range or as recommended by your notebook brand.

Yes. The pen features a metal-clad tip that is designed to be template-safe, making it suitable for precise lines with rulers and stencils without fraying or wearing the edge of the ruler.

Remove the cap and gently press the tip onto scrap paper to prime the ink. Start with light strokes to lay down a clean line, then gradually build up density. Recap after use to prevent the nib from drying out.

Most Uni Pin pens are marketed as non-toxic and safe for artists when used as directed. Always check the packaging for the safety statements and avoid ingestion or contact with eyes. If you have sensitivities, test on a small area first.

These pens are generally not designed to be refilled. When the ink runs out, replace the pen with a new one. This helps ensure consistent line quality and prevents clogging or flow issues.

The 0.1 mm tip is finer and gives you the most delicate lines, perfect for micro-detail, delicate textures, and very fine shading. Larger sizes (like 0.2–0.3 mm) produce bolder lines suitable for emphasis, borders, or quick shading, but won’t match the precision of 0.1 mm for tiny details.

Sepia provides a warmer, vintage or natural look that suits studies, botanical drawings, and illustrations aiming for a softer tone. Black offers the strongest contrast and is often preferred for technical diagrams, outlines, and high-contrast sketches. Your choice depends on the desired mood and contrast in your piece.

If you want to compare other tip sizes, you can explore these Uni Pin options on Fepy.com:

Store artworks away from direct sunlight and high humidity. Keep pens capped when not in use and store them horizontally or upright in a cool, dry place. This helps prevent drying, clogging, and color shifts in the ink over time.