If you are into designing type, creating the odd set of letters and words for logo designs and display pieces, this excellent article by Ian Moore should be bookmarked.
It covers the most crucial aspects when designing any kind of geometric type, details that are often not considered at the beginning, but make all the difference when applied.
A small clip from the article:
For graphic designers beginning to experiment in type design, a geometric or modular typeface is a natural starting point. Illustrator and other programs offer a simple collection of elements such as circles, squares, and triangles which can be combined to create a passable alphabet.
This is the same route I took when dissatisfied with the limits of commercial fonts at the time. I twisted and distorted each character to fit into a few simple, incredibly strict rules of construction. Invariably this produced a wide range of exotic letterforms, some more legible that others.
Ian Moore works as a full-time graphic designer and in his spare time as a type designer for The Colour Grey. This is an updated version of an article originally posted on Design Assembly. It’s been re-edited and expanded for Typographica.