How do printing plates work? -- an "explanation"

[Rhubarb_Runner]

I ran this post on my website back in Dec. 2010, and thought I'd share it with folks at The Bench:
http://mmmrhubarb.wordpress.com/2010/12/13/how-printing-plates-work-courtesy-of-sewing-machine-guy/


(all you ever wanted to know...and less!)

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