Learn how to make a sleep mask with a free sewing pattern. This beginner sewing project helps with sleep and makes a great handmade gift. Do you need a small sewing project that’s quick to make, only ...

Fig. 1. Given (a) the scanned face model of a subject, we develop an optimization-based approach to design (b&c) a PAP mask cushion that fits the face model. (d) The designed mask cushion is ...