Print every tile on matching paper at 100%. Find the row and column labels above the image. Start with the top-left tile, trim one adjoining edge and align the repeated image in the overlap. Tape from the back after checking the match. Continue across the row, then add the next row. Use the same trimming direction throughout. Measure the control square on the first sheet before cutting.

How to assemble a paper poster

Before you download

The dashed rectangle follows the printed tile boundary. Overlap is part of the image repeated on neighbouring sheets, not an extra blank strip. Check the image alignment before taping each join. Keep the full-size sheet until you know which edge to trim, and lay out all tiles before final assembly.

Print settings that preserve size

Choose Actual size or 100% in your PDF viewer. Match the PDF paper size and measure the 20 mm square after printing.

Useful next steps

Sources and further reading

Adobe Acrobat: Poster printing