Charbonnel black satin ground engraver Lamour allows a long etching time with no risks of scaling.
It dries faster than Charbonnel Ultraflex due to the presence of quick drying petroleum.
It is also harder than the Ultraflex ground and, therefore, result in finer lines.
Apply it cold to the plate with a very supple brush, or plate coating device or pour it directly onto the inclined plate.