If you make a rounded configuration, you will need to bend a sheet. You can do this in two ways. The first is suitable for small radii. We take a cut strip, which should correspond to the width of the opening in the width. We make transverse incisions over the entire length with the help of a knife and break them. Have a workpiece under the profile and attach it with self -tapping screws. The second method consists in pricking gypsum with a special gear roller (you can use just an awl). Distance between punctures — 1 cm. Then, with ordinary water, we moisturize the surface with a sponge. This will need to be done several times, and after an hour a strip of drywall can be carefully bend in the shape of the arch and fixed in this position until completely dry. Also, the arch can bend in place, immediately fixing it with self -tapping screws, but this requires some experience and tightly fixed frame.
