Thermal Dynamics Cutmaster 50+
#13 in Over 45 AFull review
A dual voltage 50 A cutter for farm and fabrication shops that want thick-plate capacity and a CNC port in one machine.
Amazon $2,700$2,700
The Thermal Dynamics Cutmaster 50+ and the Thermal Dynamics Cutmaster 70+ are evenly matched, rated 3.5 and 3.5. The Thermal Dynamics Cutmaster 50+ leads on duty cycle. The Thermal Dynamics Cutmaster 70+ wins on cut. The Thermal Dynamics Cutmaster 50+ costs $785 less ($2,700 vs $3,485).
Thermal Dynamics Cutmaster 70+
#17 in Over 45 AFull review
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.
Amazon $3,485$3,485
Prices were last checked November 2, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Thermal Dynamics Cutmaster 50+ for duty cycle (50% at full output (50 A) vs 40% at full output (70 A)).
- Choose the Thermal Dynamics Cutmaster 70+ for cut (1 1/8 in rated cut on mild steel vs 1 in rated cut on mild steel).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every over 45 A plasma cutter; a clear win is highlighted. How we rank explains each one.
| Factor weight | Thermal Dynamics Cutmaster 50+ | Thermal Dynamics Cutmaster 70+ |
|---|---|---|
| Overall rating | 3.5/5 | 3.5/5 |
| Value 30% | 36 $2,700 per inch of rated cut ($2,700, 1 in) | 32 $3,097.78 per inch of rated cut ($3,485, 1 1/8 in) |
| Cut 20% | 67 1 in rated cut on mild steel | 83 1 1/8 in rated cut on mild steel |
| Duty cycle 15% | 75 50% at full output (50 A) | 50 40% at full output (70 A) |
| Pilot arc 10% | 100 pilot arc | 100 pilot arc |
| Warranty 25% | 50 3-year warranty on the machine | 50 3-year warranty on the machine |
Specifications
| Thermal Dynamics Cutmaster 50+ | Thermal Dynamics Cutmaster 70+ | |
|---|---|---|
| Cutting | ||
| Input voltage | 120/240 V | 120/240 V |
| Maximum output | 50 A | 70 A |
| Rated cut, mild steel | 1 in | 1 1/8 in |
| Sever cut, mild steel | 1 1/4 in | 1 1/2 in |
| Rated duty cycle | 50% at 50 A | 40% at 70 A |
| Pilot arc | Yes | Yes |
| Air and build | ||
| Air supply | 8.3 cfm, 90 psi | 8.3 cfm, 90 psi |
| CNC port | Yes | Yes |
| Weight | 38.6 lb | 38.6 lb |
| Warranty | 3 years | 3 years |
| Released | 2024-10 | 2024-10 |