Laser Spot Welding Machines for Precision Micro Welding
Ideal for jewelry repair, thin metal welding, electronics & precision components
Choose the Right Laser Spot Welding Machine？
Option 1：Nd:YAG laser
Nd:YAG Jewelry Laser Welding Machines
Gold & Silver Jewelry Repair Precision Micro Welding Minimal Heat Impact
View：Scotle Mini10 Desktop Jewelry Laser Spot Welding Machine
Option 2：Fiber laser
Fiber Laser Spot Welding Machines
✔ Thin Metal & Stainless Steel
✔ High Stability & Efficiency
✔ Industrial Micro Welding
View： Scotle QCW Fiber Laser Spot Welding Machine for Thin Metals
Nd YAG jewelry laser welding machines
Nd:YAG jewelry laser welding machines are precision micro-welding systems designed for jewelry manufacturing and repair.They are ideal for welding gold, silver, platinum, and other precious metals, delivering high accuracy with controlled heat input and minimal thermal impact.Equipped with microscope or CCD visual systems, Nd:YAG laser welders enable clean, precise welds on delicate jewelry parts without deformation or discoloration.Not recommended for thick industrial steel welding.
Scotle currently offers two Nd:YAG jewelry laser welding machine models, as listed below.
• Compact Desktop Design – Space-saving size, ideal for jewelry studios and retail repair shops
• Air-Cooled System – Plug-and-play operation, low maintenance, no external water chiller required
• CCD Camera + Microscope – Dual visual positioning for accurate and confident micro welding
• Pulsed Nd:YAG Technology – Low heat input, safe for gold, silver, and delicate jewelry parts
• Ideal for Daily Jewelry Repairs – Perfect for rings, chains, prongs, fillings, and fine adjustments
• Water-Cooled System – Higher stability and longer duty cycle for continuous jewelry welding
• Professional Vertical Structure – Designed for workshop and production-level use
• CCD Camera + Microscope – Dual visual positioning for precise and confident micro welding
• Pulsed Nd:YAG Technology – Excellent control on gold, silver, and precious metals
• Low Thermal Stress – Minimal heat-affected zone, no deformation or discoloration
What Is YAG / Nd:YAG Laser Welding for Jewelry Spot Welding?
What Is YAG / Nd:YAG Laser Welding?
YAG laser welding is a solid-state laser welding technology based on a Nd:YAG crystal, operating at a wavelength of 1064 nm.
In the jewelry industry, the term “YAG laser” almost always refers to Nd:YAG pulsed laser welding, which is widely used for precision spot welding and micro repair.
YAG vs Nd:YAG – What’s the difference?
This is one of the most common points of confusion for customers.
YAG (Yttrium Aluminum Garnet) is the crystal material used inside the laser system.
By itself, YAG does not generate laser light. It acts as the carrier and working medium.
Nd:YAG means that neodymium (Nd) is added to the YAG crystal.
Only after this doping process does the crystal become active and capable of producing a laser beam.
That is why, in industrial usage, you will often see:
YAG laser ≈ Nd:YAG laser
In simple terms, YAG is the crystal carrier, while Nd:YAG is the working laser.
Spot Laser Welding vs Nd:YAG — What’s the Relationship?
Spot laser welding is a welding method, while Nd:YAG is the laser type.
What Is Spot Welding?
Welding at a single point or very small area
Short-duration, pulsed energy release
Typical weld spot diameter: 0.2–3 mm
Spot = welding process
Nd:YAG is a laser generation method that uses a 1064 nm wavelength and produces high-peak-power pulses for precise spot welding.
They do not conflict In jewelry applications, they are the ideal combination
Why Nd:YAG is the standard for jewelry spot welding？
Jewelry welding requires extremely fine control. The parts are small, delicate, and sensitive to heat.
Nd:YAG lasers are especially suitable because they operate in pulsed mode, allowing precise energy delivery in very short bursts.
This offers several key advantages:
Pulsed output with high peak power
Extremely small weld spots (approximately 0.2–3 mm)
Minimal heat-affected zone
Low risk of burning, deformation, or discoloration
Excellent results on gold, silver, and K gold jewelry
Ideal for repair welding, hole filling, and micro spot welding
Because of this balance between precision and heat control, Nd:YAG remains the preferred choice for professional jewelry laser welding machines.
Nd:YAG vs Fiber Laser (for jewelry applications)
| Item | Nd:YAG Jewelry Laser | Fiber Laser |
|---|---|---|
| Working mode | Pulsed | Continuous |
| Weld spot control | ★★★★★ | ★★ |
| Heat input | Very low | High |
| Jewelry suitability |  Highly suitable |  Not recommended |
| Typical power | 60–200W | 500W+ |
Conclusion:
Jewelry spot welding requires pulsed Nd:YAG technology, not continuous-wave fiber lasers.
Inside the Nd:YAG Laser System
What does a YAG crystal look like?
The YAG crystal （the above picture showed）is typically a transparent or light purple cylindrical rod, precisely polished on both ends.
The color comes from neodymium (Nd) doping. Pure YAG without Nd is almost completely transparent.
Where is it inside the machine?
In a Nd:YAG jewelry laser welder, the crystal is sealed inside the laser cavity, together with:
Xenon lamp
Reflective chamber
Cooling system (air or water)
It is not visible during normal operation and is not a consumable part.
How does a YAG Laser Work?
The working process：Xenon lamp → excites YAG crystal → Nd ions are activated → 1064 nm laser is generated
Common Misunderstandings
Thinking YAG is just a piece of glass Thinking it is an optical fiber Thinking it is a frequently replaced consumable
Correct understanding:
YAG is a solid-state laser crystal and a core component, but not a routine consumable
Practical Maintenance Reality
In Nd:YAG jewelry laser welding machines:
🔧 Commonly replaced part: Xenon lamp
❌ Rarely replaced: YAG crystal
The YAG crystal typically lasts 8–10 years or longer under normal use.
Application of YAG Jewelry Laser Welding Machines
fiber laser spot welding machines for Thin Metals
A fiber laser spot welding machine is a laser welding system that uses a fiber laser source to deliver highly concentrated energy onto a very small, precise area of metal, creating a strong weld point in an extremely short time.
It is a machine designed for fast, precise, low-heat spot welding using fiber laser technology.
• Compact Portable Design – Lightweight briefcase-style structure, easy to carry and ideal for on-site and workshop use
• QCW Fiber Laser Technology – Stable output with high peak power, designed for precise spot welding of thin metal parts
• Air-Cooled System – Plug-and-play operation with low maintenance, no external water chiller required
• Adjustable Laser Parameters – Supports multiple welding settings for different materials and thicknesses
• Ideal for Thin Metal Spot Welding – Suitable for stainless steel, nickel sheets, battery tabs, and electronic metal components
What Is Fiber Laser Spot Welding? Technology, Working Principle, and Applications
What Is a Fiber Laser?
A fiber laser is a type of laser in which the laser beam is generated and amplified inside an optical fiber.
Key characteristics include:
The laser is generated and amplified within an optical fiber
The typical operating wavelength is 1064 nm
Stable output with high energy efficiency
Most fiber lasers operate in continuous-wave (CW) or quasi-continuous output modes
Fiber refers to the laser generation method, not the welding process.
What Is Spot Welding?
Spot welding refers to a welding process in which:
The welding area is very small
Energy is concentrated on a single point or a small localized area
It is commonly used for joining thin materials
Spot = the welding process or welding method
What Does Fiber Laser Spot Welding Mean?
When the two concepts are combined:
Using a fiber laser to weld a small, localized area
In other words:
Fiber laser spot welding machine =Fiber laser technology + small-area spot welding application
Typical Characteristics of Fiber Laser Spot Welding
Compared with Nd:YAG jewelry spot welding, fiber laser spot welding typically features:
Continuous or quasi-continuous output- Fast welding speed
- High weld strength
- Relatively higher heat input
- Not designed for ultra-small or cosmetic-grade weld spots
It is therefore more suitable for industrial, efficiency-oriented welding applications.
Application of Fiber Laser Spot Welding Machine
Get a Fast Quote for Your Application
Reply within 12–24 hours. Factory-direct support
email address
sales08@scotle.com
Phone number
(86)13725576791
(86)18902847621
location address
No.14, 2F, Building Y1, Bantian Street Creative Park, Longgang District, Shenzhen 518000 ,China (Mainland)