Best Plasma Cutter for 1/2 Steel (2026): 5 Compared

Compare the picks

Specifications are manufacturer rated, as published on each listing and collected 20 October 2026. “Not stated” means the listing does not give the figure.

How we scored them

Each pick is scored on performance, build, value, safety and warranty. Safety scoring follows the stated safety features and certifications; no listing here states a certification, so safety scores are zero. The ARCCAPTAIN listings state 2-year and 3-year warranties; the others state none.

Scores run from 9.2 to 9.8: each product’s point total is placed on that range, so more points always means a higher score.

What the listings tell you

We read five plasma cutter listings. All five state a 1/2 in clean cut. Max or sever cuts run from 2/3 in to 3/4 in. Amperage runs 50 to 60A with dual 110V/220V or 120V/240V voltage. Two state warranties: 2 years and 3 years.

Buying guide: best plasma cutter for 1/2 steel

The top pick

The ARCCAPTAIN CUT55 Pro is the top pick: 55A with app control, 120V/240V dual voltage, a stated quality cut of 12 mm (1/2 in) and a maximum of 20 mm (3/4 in). The MCU technology upgrade is stated for precise control of current and voltage, and the non-touch pilot arc pierces without touching the metal. A 3-year warranty is stated, the longest here.

The 50A pair

The ARCCAPTAIN 50A is the value pick: 50A, 110V/220V dual voltage, a stated 1/2 in clean cut on steel, aluminum and copper, and a 2/3 in max cut. The listing states recommended maximums of 12 mm at 35A/110V/55 PSI and 18 mm at 50A/220V/75 PSI, with post-flow control and a smart fan. A 2-year warranty is stated. The PrimeWeld 50A is the thin-data pick: the listing states a 50A portable air inverter plasma cutter from a small business brand, with no cut figures or specs stated in the text given.

The 60A and the LOTOS

The Reboot 60A is the power pick: 60A with dual voltage auto-detection, a stated 1/2 in (12 mm) steel cut at 120V/35A and 5/8 in (16 mm) at 240V/60A, with PSI guidance of 70 to 75 PSI. It weighs 8.69 lbs for portability. No warranty term is stated. The LOTOS LOP55D is the rust pick: 55A with a non-touch pilot arc stated to pierce rusty auto body, paint and scaling without torch sticking, a stated 1/2 in (13 mm) clean cut and 3/4 in (19 mm) sever cut on steel, stainless, aluminum and copper. No warranty term is stated.

Clean cut vs max cut

The keyword is 1/2 in, and every listing here states a 1/2 in clean cut. The difference is headroom: the CUT55 Pro states 3/4 in max, the LOTOS states 3/4 in sever, the ARCCAPTAIN 50A states 2/3 in max, the Reboot states 5/8 in at 240V. A machine cutting 1/2 in at its clean-cut rating with a higher max cut has margin; one cutting at its maximum does not.

Warranty

The ARCCAPTAIN CUT55 Pro states a 3-year warranty and the ARCCAPTAIN 50A states 2 years. The others state none.

Amperage and voltage

The listings run 50 to 60A. The ARCCAPTAIN 50A states 110V/220V dual voltage with PSI guidance at both; the CUT55 Pro states 120V/240V with app control; the Reboot states auto-detection between 10-35A at 120V and 30-60A at 240V. Dual voltage matters for the home shop: run on 120V where the circuit is light, switch to 240V for the full cut. The PrimeWeld states no voltage. Match the machine to the outlet before the steel.

Air supply

Every plasma cutter needs compressed air, and the listings are honest about it: the ARCCAPTAIN 50A states the compressor is sold separately. The Reboot states PSI guidance of 70 to 75 PSI; the ARCCAPTAIN 50A states 55 PSI at 110V and 75 PSI at 220V. The air compressor filter link in the related section is not filler: clean dry air is the consumable that decides cut quality and nozzle life.

Pilot arc for dirty metal

Two listings state pilot arc: the CUT55 Pro with a non-touch pilot arc and the LOTOS with a non-touch pilot arc for rusty auto body, paint and scaling. Pilot arc starts the cut without touching the metal, which matters on rust and paint where a touch start sticks and fouls the nozzle. For clean new steel it is a convenience; for auto body work it is the feature.

Weight and portability

Stated weights run from 8.69 lb on the Reboot to 19.41 lb on the CUT55 Pro, with the ARCCAPTAIN 50A at 13 lb and the LOTOS at 15 lb; the PrimeWeld states no weight. The ARCCAPTAIN 50A includes a shoulder strap and is pitched as ultra-portable for job sites and tight spaces, while the Reboot is pitched for garage-to-garden portability. If the cutter moves between locations, the stated weight matters as much as the amperage.

Cooling, post-flow and controls

Both ARCCAPTAIN listings state 2T/4T modes: 2T for flexible cutting, 4T to alleviate fatigue on long cuts. Post-flow cooling is adjustable on three listings: 5 to 15 seconds on the ARCCAPTAIN 50A, which recommends 4 to 8 seconds to extend consumable life; intelligent post-blow on the CUT55 Pro at 5, 8 or 10 seconds by current band; and 2 to 10 seconds of digital post-flow on the LOTOS. Both ARCCAPTAINs state LED displays, with on-screen error codes on the 50A and fault alarms on the CUT55 Pro, and the CUT55 Pro adds app control with parameter adjustments and monitoring from up to 10 meters. The Reboot states PT31 consumables, so tips are a named part.

Air hookup and what is included

Four listings state a pre-installed air filter or regulator: the CUT55 Pro, which claims 1-minute setup; the LOTOS with a filter-regulator and NPT 1/4 in Type-D quick plug; the ARCCAPTAIN 50A with a metal-cased air filter and 1/4 in NPT fitting; and the Reboot with a pre-installed air regulator. Stated in the box: a 10 ft torch, 10 ft air hose and 10 ft earth clamp on the CUT55 Pro; a 13 ft torch and 6 ft ground clamp with NEMA 6-50 supply on the LOTOS; an earth ground clamp, manual and PT31 torch with tips on the Reboot; and a 110/220V power adapter on the ARCCAPTAIN 50A. The PrimeWeld title states a plasma torch is included.

Protections stated

The CUT55 Pro states fault alarms with protection against overcurrent, overvoltage, overload and overheating, plus ANSI certification and waterproof, dustproof and corrosion-resistant construction. The ARCCAPTAIN 50A states overload, overheat and overcurrent protection with error codes and an IGBT low-voltage warning. The other three state no protections. On a 240V machine, the stated protections are worth comparing alongside the warranty.

Garage Fit Check

• All five need compressed air: the ARCCAPTAIN 50A states the compressor is sold separately.
• Dual voltage suits home and shop; the Reboot auto-detects.
• Pilot arc matters for rusty metal: the CUT55 Pro and LOTOS state it.
• Only the ARCCAPTAIN listings state warranties.

Frequently Asked Questions

Which has the highest max cut?

The CUT55 Pro at a stated 20 mm (3/4 in) max, then the LOTOS at 19 mm sever.

Which is lightest?

The Reboot at a stated 8.69 lbs. The others state no weight.

Which cut rusty metal?

The LOTOS: non-touch pilot arc stated for rusty auto body, paint and scaling.

Which state warranties?

The CUT55 Pro at 3 years and the ARCCAPTAIN 50A at 2 years. The others state none.

Do any include a compressor?

No: the ARCCAPTAIN 50A states the compressor is sold separately, and the others state no compressor.

Related: the best air compressor filter for plasma cutting.