Envelopes

Models of this type are also automatically listed in: geometric, origami-first design, single-sheet

A number of envelopes, both plain and decorated, can be folded in the form of origami without the need to use cuts or glue.

This page lists folding instructions for models of a single type. You might be interested in the models themselves instead.

Napkin Heart II

February 18, 2026

This model is almost identical to Hiroshi Kumasaka’s Heart Card aka Heart 2. The only difference is the layer ordering of the...