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Draper 70042 Storm Force® MMA Inverter Welder, 120A
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Welding Propane Cutting Nozzle, 1.2mm - 3/64
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Technical Specification
PRODUCT NUMBER 70041700290820108200MINIMW120iMINIMW160i
Type Inverter MIGInverter MIGInverter MIGInverter MIGInverter MIGInverter MIG
Dimensions 200 x 95 x 145mm288 x 119 x 207mm
Duty Cycle 180A @ 15%140A @ 20%100% @ 93A, 60% @ 120A100% @ 124A, 60% @160A
Length (mm) 145207
Voltage (V) 230230230230230230
Weight (kg) 3.15.33.74.1

Q 1. What welding processes does the Draper 70042 support?

A. The 70042 supports ARC/MMA stick welding. Output spans 20-120A across all modes. Suitable for mild steel.

Q 2. What power supply does the Draper 70042 require?

A. The 70042 requires a 230V supply. If you are unsure whether your supply is adequate, consult a qualified electrician before installation.

Q 3. What is the duty cycle of the Draper 70042?

A. The 70042 has a duty cycle of 35% @120A / 60% @100A / 100% @ 85A. Duty cycle is measured over a 10-minute period — a 60% duty cycle means 6 minutes of continuous welding followed by a 4-minute cool-down. Operating at lower amperages increases available run time.

Q 4. What accessories are included with the Draper 70042?

A. The 70042 is supplied with Electrode holder, 200A, Earth clamp, 200A, Chipping hammer/wire brush, Face mask. Additional consumables are available separately through PartsForMachines.com.

Q 5. How portable is the Draper 70042?

A. At 3kg, the 70042 is among the more portable machines in its output class. A carry handle is fitted for single-person transport.

Q 6. What materials can the Draper 70042 weld?

A. The 70042 is primarily suited to mild steel.

Q 7. Does the Draper 70042 have thermal overload protection?

A. Yes. The 70042 is fitted with automatic thermal overload protection that cuts output if the machine exceeds safe operating temperature. It will restart automatically once it has cooled. Operating within the rated duty cycle minimises the frequency of thermal interruptions.

Q 8. Is the Draper 70042 suitable for outdoor or site use?

A. The 70042 is primarily designed for workshop use. For outdoor or site use, protect the machine from rain and dust. IP21S rating provides limited splash resistance but not weatherproofing.

Q 9. When would I choose TIG welding over MIG or ARC on the Draper 70042?

A. TIG produces the cleanest, most precise welds — ideal for stainless steel, thin sheet, and visible joints where appearance matters. ARC/MMA is faster for thicker sections and suits outdoor or on-site work. The 70042 lets you switch between TIG and ARC to match the job.

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