It's a device that enhances the performance of flexible nibs. It rests on top of the nib, and stores ink in the space over the nib. This continues to feed ink to the nib when the nib flexes backwards and rises off the underfeed. The tip of the overfeed slides into the gap between the two tynes as they separate and acts like a bridge to continue the steady flow of ink to the tip. 

No, only medium to large pointed nibs. You can't use them with crowquills - that would require a very small overfeed. We provide overfeeds for our Manga G nibs, Brause Rose nibs, and our Sketch nibs.

Yes, you can. You replace the overfeed with a spacer we provide with each overfeed pen. The spacer keeps the nib tucked in tightly. You can slide the overfeed back in when you want to use it. Overfeeds aren't suitable for close work with fine detail. They are best for drawings with wide line variation. 

. . . download our description for how you use our overfeeds.

Manga G nibs are popular with a wide range of artists, from calligraphers to comic book artists. The three most popular Manga G nibs are made by Zebra, Nikko and Tachikawa. They are well made nibs that provide great flex and last longer than most dip nibs. 

These are pointed nibs made by Brause, and are popular with a wide range of artists. The tip is very flexible, so it takes more practice to use this nib successfully. An overfeed works well with this nib to constrain the flex.

We make these flexible nibs, which are designed for quick and easy sketching. Our Sketch nibs skate over paper in all directions. This is difficult to do with Manga G nibs, where the point can snag on the paper. Sketch nibs work well with overfeeds to spread the ink, which lubricates the nib movement.

These fit into the front of our pens and let you draw and write with other tools, such as crowquills and Gillott 303 nibs, brushes and our quill nibs

Washing a drawing means applying water or dilute ink solution to your drawn lines to create tonal values that enhance the appearance of your drawing.

You can add a bit of color to your drawings. Fill the Brush Tool with watercolor or colored ink and brush it onto your drawings.

Fill the tool with water or dilute ink and press the tool onto the back of your Classic pen. Draw your lines using the nib, spin the pen in your hand, brush on water or ink, spin the pen again and resume drawing.