Not exactly. CMBT stands for "composition modified barium titanate" which is the generic term for the ceramic used in common ceramic capacitors. They make a disc by putting the powder, with a temporary binder, into a pill-press. It's compressed, and then put into a furnace at about 2000 degrees, which cause the powder to fuse together, and with time, all the spaces are gone. That is also called a densification.typical ceramics are 98% dense. During that process, the shape shrinks about 20%.

not that different from the ancient pottery process.