Richard, Ink.

Cross: Fountain Pen Nib Replacements -- Cross Century II Nibs

Cross Solid Gold Fountain Pen Nib Replacements
18k & 23K Gold Replacement Nibs plated in Gold and Rhodium for A.T. Cross Century II Fountain Pens
Choose your width from Extra Fine, Fine, Medium and Broad
►Available at A.T. Cross from $25 to $70

Century II 18 Karat Gold Nib with 23 Karat Gold Plated Nib Ring

Century II 18 Karat Gold Nib with Rhodium Plated Sterling Silver Nib Ring

Century II 23 Karat Gold Plated Nib with 23 Karat Gold Plated Nib Ring

Century II Rhodium Plated Nib with Rhodium Plated Nib Ring

DIY Nib Grinding: How-to Grind Your Own Fountain Pen Nib

(image: Merritt Maestro Fountain Pen Handcrafted in Golden Box Elder Burl w/ Rhodium and 22k Gold fittings. Photography by Richard Lee Merritt)

How to Grind Your Own Nibs in Just a Few Steps
Online Nib Grinding Guide by Ludwig Tan
Here's a fantastic article published years ago at Glenn Marcus' website.
The article was originally published in the Journal of the Society for Italic Handwriting, Writing Matters, Autumn 2000 & Spring 2001.

This is a fantastic article that thoroughly explains the Why and How to polish and grind the nibs of your fountain pens, complete with hand drawn illustrations.
 
In the article Grinding Your Own Nibs, Ludwig Tan covers the following topics:

► Why grind your own nib?

► Choosing a fountain pen - what is available?

► Grinding your nib

► Preparing the pen

► Understanding the shape of an Italic nib

► STEP 1:Flattening the Base of the Nib

► STEP 2: Flattening the Top

► STEP 3: Flattening the Writing Edge

► STEP 4: Grinding a Nib Down to a Finer Width

► STEP 5: Sharpening the Chisel Point (or, sharpening a blunt nib)

► STEP 6: Polishing & Smoothing Your Nib

► READ THE ARTICLE: Grind Your Own Nibs

Quo Vadis Blog posts J. Herbin Ink Reviews + Gives Away Free Ink

Earlier today, the Quo Vadis Blog posted a few links of some reviews of J. Herbin Inks after they realized during their recent "planner review" that many Quo Vadis fans and customers are fountain pen users.

Get a FREE Bottle of J. Herbin Ink for you to review!
For a very limited time they are offering one free bottle of J. Herbin green or orange colored ink in exchange for your review.  If you want in on this, you should hurry as they only have a limited supply - one bottle per person. (See the blog post here for details)

If you're looking for a really nice planner or agenda using super high quality Clairefontaine paper -- have a look at quovadisplanners.com

Want to Write Better? See the WhiteSmoke Writing Tool Demo!