Gutenberg museum

Today we went to the Gutenberg museum. It's a museum that has the history of books and printing.

The wax tablets were popular until the 17th century.

How you use the wax tablet is you scratch into it with a sharp stick and when you don't want to have it there you rub it out with wax.

But the problem with it is , is that it is bulky and if its hot the wax melts and all your words get melted too.