Stacked or flat layers for vinyl?

A three-color design can be split into cut layers in two different ways. The artwork looks the same on screen either way. On a shirt it doesn't.

Flat: every color sits side by side

Each layer is exactly the area of its color. A red circle on a blue square becomes a red circle and a blue square with a circular hole in it. Put together, the pieces fit like a jigsaw.

The catch: jigsaw pieces have to line up perfectly. Heat-transfer vinyl shifts slightly when pressed, carriers stretch, and your eye placement is never exact. Any misalignment shows as a thin line of shirt between colors, or as an overlap on one side and a gap on the other.

Use flat for: cardstock and paper, where pieces are glued side by side; print then cut, where the art is printed, not layered; and very thick materials where doubling up would be too bulky.

Stacked: each color runs under the ones above

The bottom layer is the combined outline of everything, and each layer above covers only its own color. The red circle is still a circle, but the blue layer is now a full square with no hole. The red goes on top.

Why it works: the lower color already fills the space under every upper color, so a small shift in placement just covers a little more or less blue. No gaps can appear.

The cost: more material under the top colors, and more thickness where colors overlap. For most adhesive vinyl on hard surfaces you'll never notice. For three or four layers of heat-transfer vinyl, the stack gets stiff, and some HTV types aren't meant to be layered at all, so check your vinyl's instructions.

Use stacked for: layered HTV and adhesive vinyl where colors touch.

Which color goes on the bottom?

Makerfern puts the color with the largest area at the bottom. That's usually the background shape of a design, and it makes the base layer the combined silhouette. The layer list is in pressing order, from the first layer down to the last layer on top.

If a small color has to sit under a big one, flat layers are the better choice for that design.

Reducing layers

Each layer is another sheet, weed and press. Two similar shades often aren't worth separate layers. Lower the color count by one, and the two nearest colors merge. The piece count per layer in the cut report is a good guide: a layer with dozens of tiny pieces is often a shading color you can drop.