I have been using sandpaper and glass to sharpen my chisels for a while with varying degrees of success.
I saw on another post where Stu explained how he made a "power strop". I thought I would give it a try. For a total of about 20 bucks I made one this weekend. All I can say is WOW! I have never had my chisels this sharp. I've shaved so many bald spots in my arm hair a guy I work with said it looks like I have the red dog mange.