Prepare and sort
Use a ruler, scissors or a craft knife with a cutting mat, and tape suitable for the back of your paper. Let ink dry before stacking or taping sheets. Keep the assembly map nearby.
Labels use letters across columns and numbers down rows. Match the labels to the map rather than relying on the order sheets landed in the printer tray. Set aside the test ruler and guide pages; they are not part of the picture.
Join a continuous image
- Lay out the first row without tape. Compare two neighbouring pages and locate the repeated strip of image.
- Trim the incoming page to its image edge on the side that will sit over its neighbour. Keep the underlying repeated strip to help alignment.
- Slide the trimmed page over that strip until the repeated features coincide. Check two points along the seam, not just one corner.
- Hold the sheets flat and tape from behind where practical. Finish a row, then align the next row in the same direction.
- Check the overall rectangle before trimming the outside boundary or mounting the finished poster.
Do not remove intentional white bands
For white dividers or a framed-grid layout, preserve the white areas shown in the preview. The dark frame in a scene preview is a display illustration, not a frame that the printer supplies.
Whole-sheet collage keeps complete paper rectangles. Place sheet edges together without applying the seamless-overlap method. Some modes round the finished size to a whole sheet grid; confirm the preview before printing.
Fix a seam before adding more tape
If the top aligns but the bottom does not, check that both sheets were printed at the same scale and that neither is skewed. Reprint a warped or stretched sheet. If a feature appears twice, the repeated overlap has not been covered correctly.
If a white line remains in seamless mode, check that you trimmed to the image edge rather than leaving printer margin. Do not stretch paper to conceal a scale mismatch; the error will accumulate across the poster.