Sunstone DL200 Mold & Die Repair Laser Welder | 200J

The Sunstone DL200: A 200-Joule, 3-Axis Floor-Standing Laser Welder That Brings the Repair to the Mold — Not the Mold to the Machine

Every day a mold is out for repair is a day your press isn't running. The DL200 eliminates the two largest sources of mold repair downtime — outsourcing delays and access limitations on large workpieces — with 200 joules of precision laser welding power delivered through a fully articulating arm with 3-axis motor control and 2-axis tilt and rotation, capable of reaching nearly any position on nearly any mold or die.

The ROI Case for In-House Mold Repair

The financial argument for bringing laser welding in-house is well-documented in the plastics industry. Plastics shops that have made the transition report saving $20,000 to $25,000 per year compared to outsourcing repair work — primarily through reduced service fees, eliminated shipping, and the ability to turn around repairs in hours rather than days.

But the ROI calculation has a second, often underweighted variable: production time recovered. Every repair job sent out means a press sitting idle, a delivery date at risk, and a customer waiting. Bringing mold repair in-house with the DL200 transforms what was a multi-day outsourced job into a same-day — or same-shift — toolroom operation. The machine pays for itself not just in direct cost savings, but in the production capacity and customer reliability that in-house capability restores.

The Differentiating Feature: 3-Axis Motor + 2-Axis Tilt on an Articulating Arm

Most laser welders are fixed-position benchtop systems. The mold comes to the machine, is positioned on the table, and the laser head descends to the repair zone. This works well for small workpieces and benchtop-scale repairs — but for large molds and dies, it creates a hard practical problem: the mold may be too large, too heavy, or too geometrically complex to position correctly under a fixed laser head.

The DL200 inverts this relationship. Rather than bringing the mold to the welder, the DL200 moves the welding head to the mold.

The machine's articulating arm carries the laser delivery head to any position around the workpiece. The 3-axis motorized system (X, Y, and Z) allows precise, controlled movement across the repair surface — including automated traversal along curved geometries that would require constant manual repositioning on a fixed system. The 2-axis tilt and rotation of the welding arm adds angular flexibility on top of the linear movement, allowing the laser to reach into corners, cavities, undercuts, and positions that no fixed-head welder can access.

Axis travel:

• X-axis: 11.8 inches
• Y-axis: 27.5 inches
• Z-axis: 19.7 inches (extendable to 41 inches)

This combination of reach, range, and angular flexibility is what makes the DL200 the right tool for large mold and die repair — the application category where fixed benchtop welders simply cannot deliver.

200 Joules of Precision Energy — Dialed in for Every Repair Type

The DL200 operates across the full energy range of 0.1 to 200 joules, with 6 pulse shaping presets that allow the operator to configure how energy is delivered to match the metallurgical characteristics of the specific steel or alloy being repaired.

Mold steels are demanding weld materials. P-20, H-13, S-7, D-2, and other common tooling grades each respond differently to laser energy. A pulse profile optimized for P-20 may not produce the right result on H-13. The DL200's pulse shaping presets give the operator meaningful control over energy delivery — managing heat input, bead profile, and penetration depth for each material type without relying on a single default setting across the board.

Key energy and output specifications:

• Energy range: 0.1–200 joules
• Average power: 140 watts
• Peak power: 10 kW
• Impulse time: 0.5–20 ms
• Spot diameter: 0.6–2.0 mm (motorized, 30 positions)
• Laser source: Nd:Ce:YAG 1064 nm

The motorized spot diameter adjustment — 30 selectable positions across the 0.6–2.0mm range — is controlled from the touchscreen interface. The operator selects spot size digitally, without manual mechanical adjustment, and the machine holds that position precisely throughout the repair.

Built to Run — High-Efficiency Components, Long Service Life

Uptime is the metric that matters in a toolroom environment. The DL200 is engineered for sustained production-grade operation:

High-efficiency laser optic rail — delivers more energy to the weld point with less internal heat dissipation. The result is effective energy at the workpiece from fewer joules, less thermal stress on components, and extended flashlamp life.

Advanced constant-voltage inverter power supply — eliminates power spikes from the input line that would otherwise stress the flashlamp and reduce its service life. Power spikes are one of the primary causes of premature flashlamp failure in other laser welders; the constant-voltage inverter removes this failure mode entirely.

Superior high-efficiency components — run cooler under sustained operation, reducing stress on critical-wear parts and extending the intervals between maintenance events. Lower operating temperatures also improve weld consistency over long repair sessions.

100 stored memory cells — save the complete parameter set for every recurring repair type — steel grade, repair category, energy level, pulse shape — and recall them with a single touch. Eliminates re-configuration time between jobs on the same mold series.

On-board joystick control + color touchscreen — the DL200 provides both an on-board joystick for direct arm positioning and a digital color touchscreen for parameter management. The operator can position, adjust, and weld without stepping away from the machine.

What the DL200 Repairs

The DL200 covers the complete range of mold and die repair applications encountered in plastics, toolmaking, and precision manufacturing:

Edge repairs — rebuilding worn, chipped, or damaged parting line edges, gate edges, and cavity corners with precise bead-by-bead material addition. The laser's small heat-affected zone allows edge repair on hardened steel without heat distortion to adjacent polished or textured surfaces.

EDM pit repairs — filling electrical discharge machining marks and wire erosion pits that cause surface defects in molded parts. The DL200's adjustable spot size and energy allow precise fill work matched to pit geometry.

Hole repairs — closing unwanted holes, voids, and surface cavities in mold steel, including deep narrow features where benchtop welder access is limited.

Porosity repairs — filling subsurface gas pockets and porosity that cause surface blemishes and structural weakness in the mold surface.

Material addition for shimming — building up worn or undersized surfaces to restore dimensional accuracy, allowing the mold to continue producing in-spec parts without full rework.

Tool repairs — rebuilding worn punch surfaces, cracked tool inserts, and other precision tooling components.

Small weldments — general precision weld work on mold components, inserts, and toolroom fabrications requiring controlled, localized heat input.

DL200 vs. Orion Combo 200: Choosing the Right Machine

Sunstone offers two laser welders designed for mold and die repair. The choice between them comes down to mold size and access requirements.

Orion Combo 200 — Benchtop Laser Welder The Combo 200 is a benchtop system with the same 200-joule energy ceiling as the DL200. It is the right choice when your repair work involves smaller molds and dies that can be positioned comfortably on a benchtop worktable under a fixed laser head. If the molds you repair are primarily small to medium size — core pins, inserts, small cavities, toolroom components — the Combo 200 delivers the same precision at a lower investment point, in a compact footprint that fits most toolrooms.

Sunstone DL200 — Floor-Standing Laser Welder The DL200 is the right machine when your repair work involves large or awkwardly-shaped molds and dies that cannot be positioned under a fixed benchtop laser head. The articulating arm with 3-axis motor and 2-axis tilt brings the laser to the workpiece — not the other way around. If you run large injection molds, compression molds, die casting dies, or any workpiece too large to position on a benchtop worktable, the DL200 is the system that can actually reach the repair zone.

If you're evaluating both and unsure which fits your mold sizes, contact our team. We can help you assess based on your specific workpiece dimensions and repair types.

Full Technical Specifications

Why Buy the DL200 From The Maker's Chest?

At a $69,900 investment, this purchase deserves exceptional support and a return policy that gives you time to validate the machine in your actual production environment.

75-Day Return Window — more than double Sunstone's 30-day return policy. You have 75 days to confirm that the DL200 performs as needed on your specific molds and repair applications before the purchase is final.

Expert USA-Based Technical Support — mold repair laser welding involves real process knowledge: steel-specific pulse shape selection, energy calibration for different repair depths, arm positioning technique for complex geometries. Our team can help you work through setup and application challenges.

Dual Lines of Support — both our in-house technical team and Sunstone's own resources are available to you on a single purchase. Two channels working for you.

Authorized Sunstone Reseller — genuine product, full manufacturer warranty, backed by our additional support layer.

Frequently Asked Questions

How does laser welding for mold repair compare to conventional TIG welding? Conventional TIG welding delivers a broader heat-affected zone, which can cause distortion, stress, and surface changes in the steel adjacent to the repair — including damage to adjacent polished or textured areas. Laser welding delivers energy in a precisely focused, rapidly pulsed beam with a very small heat-affected zone. The result is a more precise repair with less collateral thermal impact on surrounding surfaces. For molds with polished cavities, textured surfaces, or tight-tolerance features near the repair zone, laser welding consistently produces superior results.

What mold steels can the DL200 weld? The DL200 is compatible with the full range of common tooling and mold steels: P-20, H-13, S-7, D-2, CPM grades, M-2, Caldie, and most other tool steel alloys used in injection mold, compression mold, die casting die, and stamping die applications. It also handles stainless steel, aluminum, and copper-nickel alloys used in specialty tooling applications. Steel-specific pulse shaping presets allow parameter optimization for each material.

How does the 3-axis motor system work in practice? The 3-axis motor system allows the operator to position the laser delivery head using the on-board joystick or touchscreen controls, moving precisely along X (lateral), Y (depth), and Z (vertical) axes. For curved surfaces or complex repair geometries, the motor system can traverse the repair path with consistent spacing and positioning — more reliably than manual repositioning between weld spots. The 2-axis tilt adds angular freedom on top of the linear movement, allowing the laser to be aimed at angles that a strictly vertical head cannot access.

How much does outsourcing mold repair typically cost versus doing it in-house? The figures vary significantly by shop volume and repair complexity, but published data from plastics manufacturers and moldmakers who have brought laser welding in-house consistently reports annual savings of $20,000–$25,000 compared to outsourcing — primarily from reduced service fees and eliminated shipping. The more significant variable for many operations is the production time recovered: in-house repair turns a multi-day outsourced cycle into a same-shift toolroom operation.

What is the input power requirement for the DL200? The DL200 accepts 110 VAC or 230 VAC input at 50/60 Hz with a 4.4 kW draw and 20A service. Most industrial facilities can accommodate either voltage. Confirm your available electrical service with your facilities team before installation.

Does the DL200 include argon shielding? Yes — the DL200 includes both an argon nozzle and a compressed air nozzle as standard. Argon is used to shield the weld pool from oxidation during repair, and compressed air is used for cooling and surface cleaning. Argon supply (gas cylinder and regulator) is not included and must be sourced separately.

How long does it typically take to develop proficiency on a mold repair laser welder? Published feedback from toolrooms indicates that basic proficiency is achievable relatively quickly compared to conventional TIG welding — the digital controls, defined parameter presets, and visual accuracy of the laser system lower the initial learning curve. Developing proficiency on more challenging repairs (deep holes, thin walls, complex angles) requires additional practice. Sunstone offers training resources, and our team can provide application support as your operators develop their skills.

What is your return policy? 75-day returns on the DL200. If the machine doesn't perform as needed for your application, reach out and we'll work through it with you.

Brand: Sunstone | Type: Floor Standing | Energy: 0.1–200J | Power: 110/230 VAC | Axis: X 11.8" / Y 27.5" / Z 19.7" (to 41")