To feed your hunger for more letterpress knowledge, check out the DesignCast Freaks of Fancy, and Everything You Wanted to Know About Wild, 19-Century Printing Techniques.
4. When designing for letterpress, no line weight should be lighter than .25 point. Lighter line weights will not hold up in the plate-making process. Keep this in mind for your font choices as well. Fonts with very thin components may need to have a slight stroke added to them in order to hold up for plate-making. In generally, try not to use any type size smaller than 4 point. (ex:4a)










Kudos and thanks to Kat for such an informative article.
The information contained in her article should help designers get the most out of letterpress, and not go down paths that cause frustration and disapointment.
One other point I would like to share is that the final look of a specified color is dependent upon the chosen substrate. The color on your screen may be quite different from the printed piece. A Pantone book is an investment, but wise one.
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