3. Joined copper segments
The manufacturing with joined copper segments is a hybrid that has the advantages of the flag risers version, when the gap between the brush track and riser diameters is significant, but it does not have flexible flags, as full copper extension segments are used, joined to the original copper segments by means of silver brazing.
This solution helps when the requested geometry is not reachable with the standard full copper segment version, because of manufacturing issues, or to contain the costs. The commutator copper body is then turned and manufactured a standard version one.