A Legacy of Innovation

For more than 60 years, Sisma S.p.A. has led the way in laser technology and manufacturing. Backed by extensive expertise and patented advancements, Sisma continues to set the global standard for reliable, high-performance laser welding systems.

Designed for Jewelers, Built for Performance

Sisma’s laser welders are crafted with jewelers in mind—delivering exceptional control and clean welds with minimal heat impact on surrounding materials. From gold and silver to platinum and titanium, these systems handle even the most reflective alloys with ease.

  • High Precision & Repeatability: Consistent welds, time after time.
  • Reliability & Longevity: Built for years of dependable performance.
  • Versatility: Tabletop and freestanding models with optical options, screen choices, and power features available.
  • Ease of Use: Preloaded programs, adjustable settings, and intuitive touchscreen controls.

Technology That Sets Sisma Apart

Sisma’s ongoing commitment to innovation has led to unique features that redefine what’s possible with laser welding technology - ensuring precision, consistency, and superior control across every weld.

  • Smart Spot Technology

    Maintains stable energy output and consistent performance for thousands of consecutive shots, delivering identical welds from the first pulse to the last.

  • Flat-Top Beam Profile

    Provides even, predictable energy across the entire weld for cleaner, safer, and more consistent results—protecting stones and delicate settings from excess heat.

  • T Version – See Every Weld in Real Time

    An integrated camera is available with Sisma’s patented SincroView technology, which shows exactly what you see through the scope on the screen.

  • Pulse Shaping

    Allows users to control energy distribution across each weld, reducing porosity and creating smoother seams and stronger joints.

  • Ergonomic Design & Eco Mode

    Improved microscope alignment to where the beam fires reduces neck and arm strain. Eco Mode promotes energy efficiency and extends flash lamp life.

  • Advanced Connectivity

    Offers Wi-Fi and remote diagnostic capabilities, simplifying updates and minimizing downtime.

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Service and Support

As Sisma’s partner in the US for the jewelry industry, Gesswein is proud to provide more than just access to cutting-edge technology, we also offer a full support network behind it.

  • Assistance selecting the best welder for the work you currently do and jobs you will be able to do with this technology at your fingertips.
  • Dedicated Gesswein Sisma Technicians provide unrivaled service, with a stocked supply of spare parts and consumables.
  • Certified training, seminars, and video resources.
  • Remote service and diagnostics to keep machines performing at their best.
  • An invite-only, online community for ongoing learning and tips.

Have questions? Our team is here to help you explore your options and find the perfect fit for your shop.

What Jewelers Are Saying

  • “The absolute best machines on the market. I have purchased two Sisma laser welders and have made my money back easily within the first year on each. Money well spent. And these machines are workhorses!”

    Bill Brown | Owner of W. Brown Custom Jewelry and Design

  • “We felt that Sisma offered most up-to-date technology compared with the others. It's been working great for 18 months, so we got another one last year! Service is great and we're very happy with Sisma and Gesswein!”

    Mircea Prejbeanu | Owner of Jost Jewelers

Ready for What’s Next?

The newest generation of LM-D Series welders builds on Sisma’s legacy with improved ergonomics, faster processing, and even greater precision—designed directly from customer feedback. Whether you’re just getting started with laser welding or upgrading to a more advanced system, Sisma’s technology adapts to your workflow and supports your growth.

Meet Sisma's New LM-D Series