Special tool design
Jig manufacture
Knurl to be chiseled (straight and slanted)
Ultrasonic cleaning
Circular engraving
Flat engraving
Bead blasting
Sand blasting
Dash polishing
Polishing
Broaching (blind hole)(Sackloch)
Slot-broaching (passage)
Welding
Brazing
Leak testing (inflation pressure 20 bar)