Pillow box template

The fields describe the blank

Panel width is the span of one flat face; blank length describes the full paper length. End-curve depth controls the curved closure region. The seam tab joins the two panels along the straight side. None of these fields is a rectangular internal height.

In the example, two 60 mm panels and a 10 mm seam occupy 130 mm across a 120 mm blank. The 12 mm curve depth stays within that blank. The usable interior changes as the faces bow and the ends close.

Score the arcs gently

Cut the smooth outer contour, then score the curved end lines with controlled light pressure. Start on scrap stock to find a method that bends the fibres without cutting through them. Fold the straight centre and seam creases before joining the tube.

Once the seam is dry, press one curved end panel inward and overlap its partner. Repeat at the other end. Avoid creasing an extra straight line across the face merely to make it look flatter.

Choose forgiving contents

A soft wrap or a small rounded object is easier to test than a rigid rectangular block. Leave space near the closures; the ends use part of the interior. Make a real trial around the intended object. If you need a measurable rectangular opening or repeatable inside depth, compare a tuck or two-piece box instead.