5 years ago this week, I released my first commercial typeface.

Each week for a year, I’m going to be designing a shirt and releasing it on my Threadless store. This is the design for week 13.

I released a couple of free typefaces in the early days of Sketchbook B. But five years ago, I took a big step and released my first commercial typeface, Powerlane.

Powerlane is a massive typeface family. 20 different fonts. And when you count all of the letters and numbers, foreign characters and special OpenType alternates, the family has more than 8,000 glyphs.

I’m proud of Powerlane. I spent years designing Powerlane and learning all about the process of finalizing a commercial typeface. And even though I haven’t sold a ton of copies, I have sold copies on five continents — North America, South America, Europe, Asia and Australia — which I think is pretty amazing.

I’ve released four other commercial fonts since Powerlane: Valdes Clarendon, Power Grid 2.0, Intermodal and Saluda. You can buy all of them on Creative Market. Powerlane and Valdes Clarendon are available on MyFonts, too. You can check out all of my type designs on my Fonts page.

This week’s shirt features my favorite character from Powerlane — the ampersand from Powerlane Outline. The shirt is available on Threadless in a range of colors.

Also, a quick side note… With the release of the 13th shirt, I’m a quarter of the way through my 52 Shirts project. 39 to go.

Bob Wertz writes about design, technology and pop culture at Sketchbook B. Bob is a Columbia, South Carolina-based designer, creative director, college instructor, husband and dad. He’s particularly obsessed with typography, the creative process and the tools we use to create. He's currently in the middle of a project to design a new shirt a week for an entire year. Follow Bob on Twitter, Instagram and Micro.Blog.