Printing Boards
All factory boards have the same size as the original WotC-boards from the basic game and the extension-sets. So they can be used together with the original boards without any problems.
PDF Boards
The 12x12" boards cannot be printed on normally sized paper in one part. The boards are seperated in 4 tiles. There are 4 different layouts used. If you need Adobe® Acrobat® Reader™ it is free to use and you can download the most current version here!

Open the PDF, print the file, cut and arrange. It is best if you attach the pages to a more rigid surface like cardboard or construction paper.

First layout is printable on 4 sheets 29x21cm (one tile on each sheet)
.
Second board layout, needs 3 sheets 29x21cm (yellow and white on one sheet).
Variation of layout 02, also printable on 3 sheets 29x21cm (white and grey on one sheet).
Final board layout, fits on 2 sheets 29x21cm (blue, white and yellow on one sheet).