Plaster is the best moulding material ordinary people could afford to enjoy. Actually, theyíre the cheapest and easiest moulding people can install. The problems are that thereís not much plaster moulding ready stock over the shelf, and, people just think itís very difficult to install.
These problems are solved. See: www.liveinbeautyca.com.
For install plaster moulding. You donít need to make the scarf cut and edge coped. Even the corner cut, it does need to be very precise like to do with wood, MDF, polyurethane. Because it can be fixing or repairing use the same material of plaster to fill the joint. This could make it seamless. That makes the installation much easier for the beginner. In later discussion, I would like to share more experience with others.