A budget touch-start cutter for clean steel up to 1/2 in in a home shop. Buyers who cut rusty, painted or mesh stock should pay more for a pilot arc.
Amazon $199.97 Lotos $139.98
A 70 A cutter for farms and fabrication shops that cut thick plate and want a CNC-ready machine. Home shops cutting under 3/4 in can buy smaller.
- 70 AOutput
- 1 1/8 inRated cut
- 40% at 70 ADuty cycle
- 120/240 VInput
Price checked November 2, 2026. As an Amazon Associate we earn from qualifying purchases.
- Severs 1-1/2 in steel for heavy farm and trailer repair
- Also runs from a household outlet at 25 A for light work
- Built-in CNC port for adding a cutting table later
- Full 70 A output runs only 40% of the time on 240 V
- Needs a 90 A breaker for full output on 240 V
- Three year warranty, half what Hypertherm gives
The Thermal Dynamics Cutmaster+ family
Every Thermal Dynamics Cutmaster+ model we rank, smallest first. Ratings compare each against its own size.
| Model | Output | Rating | Price |
|---|---|---|---|
| Thermal Dynamics Cutmaster 30+ | 30 A | 3.0/5 | $1,450 |
| Thermal Dynamics Cutmaster 50+ | 50 A | 3.5/5 | $2,700 |
| Thermal Dynamics Cutmaster 70+ (this one) | 70 A | 3.5/5 | $3,485 |
How it scores
The rating comes from 5 measured or published factors, each scored 0-100 against fixed reference points for its size. How we rank explains each one.
Specifications
| Model number | 1-7000-1 |
|---|---|
| Cutting | |
| Input voltage | 120/240 V |
| Maximum output | 70 A |
| Rated cut, mild steel | 1 1/8 in |
| Sever cut, mild steel | 1 1/2 in |
| Rated duty cycle | 40% at 70 A |
| Pilot arc | Yes |
| Air and build | |
| Air supply | 8.3 cfm, 90 psi |
| CNC port | Yes |
| Weight | 38.6 lb |
| Warranty | 3 years |
| Released | 2024-10 |
Alternatives in this size
An industrial 65 A cutter for farms, trailer builders and shops that cut 3/4 in plate often. It is more machine than most home shops need.
Amazon $4,175For a hobbyist who cuts clean steel up to 1/2 in now and then and wants the lowest price. Spend more on a pilot arc model for rusty or expanded metal.
Amazon $289Compare
Compare the Thermal Dynamics Cutmaster 70+ with any other plasma cutter →
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