Speedball Calligraphy Fountain Pens

I'm brand new to calligraphy. I've tried acetone, saliva, toothpaste, and a potato, but I feel like my speedball nibs still have a coating on them. Is this just how they're supposed

Allards Art

CYBER DEALS happening NOW! 🎉 - Blick Art Materials

Speedball Calligraphy Fountain Pens and Sets

Calligraphy & Illustration - Speedball Art

Speedball Calligraphy Fountain Pen Refills - Assorted Colors, Set of 10

Allards Art

Speedball Fountain Pen Ink Cartridges – Black

Speedball® Calligraphy Fountain Pen

Speedball Calligraphy Fountain Pen Sets

Speedball Deluxe Calligraphy Fountain Pen Set — Wallack's Art Supplies & Framing