Article: A printing press you can build yourself. (Activity).

What made Gutenberg's printing press such a revolutionary invention? Gutenberg combined a screw-operated press with moveable metal type, so he could print fairly quickly and many times.

Now you can see how this type of printing really worked. You can build a working model of an early press, and use it to print messages of your own. Just turn the page!

You Need:

* 1 carpenter's c-clamp (2- to 4-inch size)

* 2 small flat sticks (tongue depressors, paint stirrers, or rulers)

* double-faced carpet tape (about 6 inches)

* pipe cleaners

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