Vorfalzlinien

Vorfalzlinien are folding lines used in origami and papercraft. They are creases that are made in advance of the main folding sequence, often to prepare the paper for a specific shape or transformation. These lines are typically not permanent creases and are meant to be unfolded once they have served their purpose in guiding subsequent folds.

The purpose of a vorfalzlinie is to create reference points on the paper. By pre-creasing the paper, the origami artist can more accurately and easily align subsequent folds. This is particularly useful for complex models where precise alignment is crucial for achieving the desired final form. They can help define structural elements, guide the placement of other folds, or indicate where a section of the paper should be manipulated.

Vorfalzlinien are often created by making a light crease that is then immediately unfolded. This leaves a faint mark or line on the paper that can be followed during later stages of the folding process. The exact technique for creating a vorfalzlinie can vary depending on the specific origami model and the paper being used. Sometimes, they are created by simply pressing down on the paper along the intended line and then lifting, while other times a fingernail or a bone folder might be used for a slightly more defined crease. The key is that the crease is temporary and serves as a guide rather than a permanent part of the finished model.