Use Illustrator or Adobe Acrobat to print your poster as tiles.
This method will print your poster full size, but it prints to letter-size or tabloid-size paper, and you can see your poster come together by taping each sheet together.
In Illustrator, follow this procedure:
- Print your poster
- In the General dialog find Scaling
Change Scaling from Do Not Scale to Tile Full Pages - Set the overlap to be approx. 0.50 to 1.00 inches so you have enough space to overlap your sheets