The STJW 200

Diamond Sawing, Slicing & Coring, cutting, Blocking Fancy Shape, 3D Shaping

The STJW-200 by STPL is a next-generation jewellery welding machine, purpose-built for artisans and manufacturers seeking high precision, durability, and continuous operation. Designed with advanced Nd:YAG laser technology, intuitive controls, and unmatched reliability, it ensures clean, accurate welds on a wide range of precious metals. Whether you're repairing delicate gold chains or assembling high-end custom pieces, the STJW-200 delivers consistency with every pulse.

Applications

Gold, Silver, and Platinum Jewellery Welding

Chain Repairs and Intricate Joining

Stone Setting and Assembly

Custom Jewellery Manufacturing

Key Features

Nd:YAG Flashlamp Laser for stable, high-performance welding

200W Average & 2.5KW Peak Power for effective joining of various metals

Pulse Shaping with 16 Custom Programs for different metal properties

Ergonomically Angled Microscope for strain-free precision work

Built-in Water Chiller for uninterrupted 24/7 operation

7” Touchscreen HMI with Joystick control for intuitive operation

Dual Gas Channels with air-integrated foot pedal and pressure knob (Air/Argon)

Fully Enclosed Welding Chamber to ensure safety and waste containment

Germany-imported Flashlamp for extended component life

Download STJW 200 brochure

Specifications

  • Laser Type: Nd:YAG (Flashlamp)

  • Wavelength: 1064 nm

  • Laser Class: Class 4

  • Max Average Power: 200 W

  • Peak Power: 2.5 kW

  • Pulse Duration: 0.1 – 20 ms

  • Pulse Frequency: 1 – 25 Hz

  • Max Pulse Energy: Up to 50 J

  • Spot Diameter: 0.2 – 3 mm (0.1 mm optional)

  • Cooling System: Water Cooled (Built-in Chiller)

  • Gas Pressure: Up to 5 Bar

  • Control Interface: 7” Color Touchscreen & Joystick

  • Power Supply: 230 VAC, 50 Hz, 3 KW

  • Machine Dimensions: 950 mm x 492 mm x 1260 mm

  • Weight: 150 kg

Diamond Sawing

Diamond Slicing

Diamond Coring