The NEW PUK 6 FINE WELDING TECHNOLOGY THAT SETS STANDARDS Welding veneers, applying metal, fixing work, welding eyelets, closing pores, making seams, welding precious metals including. Silver as well as copper and bronze and all weldable alloys, material thicknesses also below 0.2 mm is handled by the new PUK 6. The comparison with its predecessors shows: 20 years of experience and passion in development raise fine welding technology to an unprecedented level with the PUK 6