Miller OptX 1kW support

Miller OptX 1kW Handheld Laser Welder

The OptX 1kW is Miller's handheld laser welding package for sheet metal, fabrication, manufacturing, aerospace and defense, transportation, and HVAC work. This page uses the Miller OptX 1kW spec sheet issued May 2026, index LS/2.0, to organize package stock numbers, process gases, material range, wire feeder details, nozzles, accessories, and feeder consumables.

Stock 951000204 Ready-to-weld 951000239 1,000 W average 1,500 W peak

Miller OptX 1kW handheld laser welder support

Input

20 A, 240 V, single-phase

Laser output

1,000 W average power, 1,500 W peak power

Process

Laser welding

Process gases

Argon, nitrogen

Power source

H 21 in, W 12.4 in, D 25.2 in; 140 lb

Control ranges

Laser power 0-1,000 W; wobble frequency 0-300 Hz; wobble length 0-0.59 in

Wire feeder

5-80 ipm (0.127-2.032 m/min); .023-5/64 in (0.6-2.0 mm); .045 in (1.1 mm) recommended

1kW Package Stock Numbers

Stock number	Package	Includes
951000204	OptX 1kW Package	OptX 1kW laser machine OptX wire feeder OptX laser torch 11-foot conduit wire for steel OptX accessory kit OptX hardware kit
951000239	OptX 1kW Ready-to-Weld Package	OptX 1kW package OptX laser welding enclosure OptX door interlock switch 301804, 2NC, 32 ft

Laser and Safety Classification

Primary laser

Class 4 primary laser: invisible high-power fiber laser for welding.

Guide laser

Class 2M visible red guide laser beam for positioning the torch nozzle before welding.

1kW Material Range and Gas

Metal	Material thickness range	Spot welding penetration depth	Travel speed	Shielding gas
Steel / stainless steel	20-12 gauge	20-12 gauge	15-20 ipm (0.3-0.5 m/min)	Nitrogen
Aluminum	20-12 gauge	20-12 gauge	15-20 ipm (0.3-0.5 m/min)	Argon
Copper	18-14 gauge	18-14 gauge	15-20 ipm (0.3-0.5 m/min)	Nitrogen

Spec-Sheet Welding Programs

Miller labels these as suggested settings; additional adjustment may be required. Verify the current manual and worksite procedure before operation.

Metal	Shielding gas	Wire/weld type	Wire size	Program	Note
Steel	100% nitrogen	Wire ER70S-6	.045 in	A5	Suggested power/WFS table covers 20 gauge through 12 gauge; recommended retract .045 in
Stainless steel	100% nitrogen	Wire 308L	.045 in	A2	Suggested power/WFS table covers 20 gauge through 12 gauge; recommended retract .045 in
Aluminum 6XXX	100% argon	Wire 5356	.047 in	F5	Suggested power/WFS table covers 18 gauge through 12 gauge; recommended retract .047 in
Aluminum 5XXX	100% argon	Wire 5356	.047 in	F2	Suggested power/WFS table covers 18 gauge through 12 gauge; recommended retract .047 in

1kW Accessories, PPE & Hardware

These items are listed in the LS/2.0 catalog path. Use the exact Miller part number for lookup. An Amazon button appears only where the approved registry has a verified match; otherwise use Find My Part or the full OptX accessory page.

Part number	Accessory or PPE	Catalog note	Buy / lookup
301902	OptX Laser Welding Enclosure	8 x 8 ft enclosure rated up to 2,500 W/cm2; for use with all OptX products	Buy link pending review Find My Part
301904	OptX Laser Welding Enclosure Panel	48 x 92 in panel rated up to 2,500 W/cm2; for use with all OptX products	Buy link pending review Find My Part
301901	OptX Carbon Fiber Laser Welding Helmet	Developed for 1070 nm infrared laser light protection	Buy link pending review Find My Part
301830	OptX Laser Safety Glasses - Standard	Polycarbonate glasses rated OD 7 or greater at 1,070 nm	View on Amazon Find My Part
301831	OptX Laser Safety Glasses - Oversized	Oversized-frame polycarbonate glasses rated OD 7 or greater at 1,070 nm	View on Amazon Find My Part
301792	OptX Cart	Foundation for the OptX welder, feeder, two gas bottles, accessories, consumables, and PPE	Buy link pending review Find My Part
301803	OptX Torch Cradle	Magnetic cradle used to support the OptX torch head	View on Amazon Find My Part
301878	OptX Process Validation Fixture	Checks the integrity of protective window 301823 and focus lens 301802	Buy link pending review Find My Part
301798	OptX Torch Cover	Rubber cover that helps protect the torch assembly from impact	Buy link pending review Find My Part
301793	Work-Sense Clamp	Ensures continuity between the laser torch nozzle and workpiece	Buy link pending review Find My Part
301810	Ethernet Cable	Connects a PC to the OptX power source for custom parameters and troubleshooting	Buy link pending review Find My Part
301802	OptX Focus Lens Assembly	Replacement focus lens; installation tool 301794 required	Buy link pending review Find My Part
301794	OptX Focus Lens Installation Tool	Required for focus lens assembly installation	View on Amazon Find My Part
301806	OptX Wire Delivery Guide Attachment	Wire delivery guide attachment	View on Amazon Find My Part
301807	OptX Wire Delivery Guide Adapter	Adapter for conduit to attachment	View on Amazon Find My Part
301796	OptX 11-Foot Liner - Steel	For .045 in steel	View on Amazon Find My Part
301795	OptX 11-Foot Liner - Aluminum	For .047 in aluminum	View on Amazon Find My Part
301799	OptX Nozzle Protective Cap	Nozzle protective cap	Buy link pending review Find My Part
301817	OptX Nozzle Extension - Steel	Nozzle extension for steel	Buy link pending review Find My Part
301816	OptX Nozzle Extension - Aluminum	Nozzle extension for aluminum	Buy link pending review Find My Part
301818	OptX Nozzle Tube	58 mm nozzle tube	Buy link pending review Find My Part
30-150-580	Smith Regulator	Included in OptX hardware kit	View on Amazon Open regulator support
263346	Performance TIG Gloves - Small	Unlined goat grain leather with triple-padded palm	View on Amazon Find My Part
263347	Performance TIG Gloves - Medium	Unlined goat grain leather with triple-padded palm	View on Amazon Find My Part
263348	Performance TIG Gloves - Large	Unlined goat grain leather with triple-padded palm	View on Amazon Find My Part
263349	Performance TIG Gloves - X-Large	Unlined goat grain leather with triple-padded palm	View on Amazon Find My Part
231090	Grain Leather Jacket - Large	Top-grain pigskin leather jacket with flame-resistant inside cuff	View on Amazon Find My Part
231091	Grain Leather Jacket - X-Large	Top-grain pigskin leather jacket with flame-resistant inside cuff	View on Amazon Find My Part
231092	Grain Leather Jacket - 2X-Large	Top-grain pigskin leather jacket with flame-resistant inside cuff	View on Amazon Find My Part

View the complete OptX accessory support page

Welding Nozzle Selection

Part number	Nozzle	Spec-sheet note	Lookup
301811	Welding Nozzle - Conical	Used in Miller nozzle selection chart	Find My Part
301812	Welding Nozzle - 1-point	Listed for butt, corner, T, lap, and edge joints	Find My Part
301813	Welding Nozzle - 2-point (6 mm)	Listed for butt and lap joints	Find My Part
301814	Welding Nozzle - 2-point (9 mm)	Listed for butt and lap joints	Find My Part
301815	Welding Nozzle - Wire feed	Listed for butt, corner, T, lap, and edge joints	Find My Part
301832	Welding Nozzles Set of Five	Conical, 1-point, 2-point 6 mm, 2-point 9 mm, and wire feed	Find My Part

1kW Feeder Consumables

Part number	Consumable	Wire size	Wire type	Notes
301809	OptX 11-Foot Conduit Wire - Steel	.045 in	Steel	Guide conduit for .045 in steel wire
301808	OptX 11-Foot Conduit Wire - Aluminum	.047 in	Aluminum	View on Amazon Guide conduit for .047 in aluminum wire
301825	V-Groove 4-Drive Roll Kit for Steel Wire	.045 in	Steel	Includes inlet wire guide and intermediate wire guide
301826	U-Groove 4-Drive Roll Kit for Aluminum Wire	.047 in	Aluminum	Includes inlet wire guide and intermediate wire guide
301822	OptX Contact Tips (10-pack)	.045-.047 in	Steel / Aluminum	10-pack contact tips for .045-.047 in (1.2 mm)
301823	Protective Windows (5-pack)	N/A	Optics protection	Protects laser optics from debris in the OptX torch
301796	OptX 11-Foot Liner - Steel	.045 in	Steel	View on Amazon For .045 in steel
301795	OptX 11-Foot Liner - Aluminum	.047 in	Aluminum	View on Amazon For .047 in aluminum

Related OptX Support

OptX Wire Feeder

Wire feeder capacity, conduit, drive-roll, contact-tip, and conversion-kit path.

View feeder

OptX Accessories & Safety

Laser enclosure, PPE, glasses, helmet, cart, fixture, torch cover, and safety accessory part numbers.

View accessories

Laser Consumables

Nozzles, protective windows, contact tips, conduit wire, drive rolls, liners, and review-needed service parts.

View consumables

OptX 1kW / 2kW Comparison

Return to the broader OptX machine page when comparing 1kW and 2kW package paths.

Compare OptX

Need more help?

Before ordering

Confirm the machine is the 1kW package and match the accessory or consumable by exact Miller part number, wire size, and material path.

Laser safety

Use Miller documentation and qualified laser safety controls before operation. Laser-rated PPE, enclosure, interlock, and controlled-area requirements are not interchangeable with ordinary arc-welding PPE.