Back Flap: Two Ways to Build a Back Change

Julio Montoro teaches two ways to build a Back Flap for a blue-to-red back change. The tutorial explores a reference build attributed to Hondo alongside his own variation, which he presents as a faster assembly method.

Starting Materials

You need a two-color double-backer and another blue-backed card. Montoro recommends using a face card whenever it helps to camouflage the thread.

The work requires a ruler, a craft knife, an awl, elastic thread, and adhesive or double-sided tape. The double-backer is just one component of the construction; the flap itself is fabricated during the explanation.

Cutting and Preserving the Layers

The lesson distinguishes between cutting a piece completely and making a partial cut that allows it to hinge. The layers of the card are explained, along with the pressure control needed to preserve the ply that acts as a hinge.

The frame, alignment, and orientation are also examined. Montoro demonstrates adjustments made during manufacturing, noting that cutting precision still requires plenty of practice.

Two Builds

In the first method, the frame and the changing piece are handled as separate parts that are brought together later. The application of adhesive and fitting it onto the base card are carefully demonstrated.

The second construction alters the cut and how the frame is preserved. Montoro compares this result with the previous one, showing how the difference simplifies part of the assembly.

Thread and Finishing Touches

Both methods lead to attaching the elastic thread and tying it off. The explanation applies these techniques to the flap and shows how to open it for the very first time gradually to break it in.

The conclusion covers touching up tiny white edges with a pen that matches the back color. The color change is demonstrated, highlighting the framing differences between the two methods.

It is best to practice precise cutting, gluing, and working with elastic thread. The content focuses on manufacturing both builds and testing out the back change.