SSimder MIG-140 Pro 5 in 1 Pulse MIG Welder
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Description
The Simder Welder MIG-140 Pro is a 140A 5-in-1 that runs gas MIG, flux core, Lift TIG, stick, and Pulse — plus timed SPOT spot-welding. At $119.99 it works on 110V or 220V and takes up to 10 lb spools, so one portable machine covers both gas and gasless work.
At a Glance
| Processes | 5-in-1: Gas MIG, Flux Core, Lift TIG, Stick + Pulse mode + SPOT spot-welding |
| Max Output | 140A |
| Voltage | Dual 110V / 220V |
| Gas + Gasless | Yes — use shielding gas or flux core wire |
| Pulse Mode | Yes — on Flux Core, Lift TIG, and Stick |
| SPOT Welding | Yes — timed (0.3–5.0 s), in MIG mode |
| Aluminum | No — built for steel and stainless |
| MIG Wire | 0.8 / 1.0 mm, spool up to 10 lb |
Built For
- Gas AND gasless MIG in one — run shielding gas for clean shop welds, or switch to flux core when you are outside or out of gas
- Thin-metal & auto body — Pulse controls heat to stop burn-through, and SPOT mode tacks panels with a timed 0.3–5.0 s weld
- Mobile repairs — the machine weighs only 9.8 lb bare, so it rides along to the job site
- Low wire changes — takes up to 10 lb spools, far beyond the 2 lb spools typical at this price
- Dual-voltage sites — 110V at a house, 220V in a shop, full 140A on either circuit
- Not for aluminum welding — this model handles steel and stainless; for aluminum, see the SD-4050 Pro with Pulse MIG
- Not for heavy industrial production — it is a portable DIY/prosumer machine
Full Specifications
| Model | MIG-140 Pro |
| Input Voltage | 110V / 220V dual |
| Max Output | 140A |
| Welding Processes | Gas MIG / Flux Core MIG / Lift TIG / Stick (MMA) + Pulse mode + SPOT spot-welding |
| Pulse Mode | On Flux Core, Lift TIG, and Stick (not on Gas MIG) |
| SPOT Welding | Timed 0.3–5.0 s, in MIG mode |
| Weldable Metals | Flux Core: carbon steel, low-alloy steel, thin sheet; Lift TIG: stainless, titanium, carbon steel, alloy steel, copper; Stick: thick plate, carbon steel, low-alloy steel, cast iron |
| MIG Wire Sizes | 0.8 / 1.0 mm (flux core and solid) |
| Wire Spool | 0.5–10 lb |
| Gas Setup | Gas tube included; works with solid wire and shielding gas |
| Lift TIG Torch | WP17V (sold separately) |
| Bare Weight | 9.8 lb / 4.43 kg |
| Boxed Weight | 17.31 lb / 7.85 kg |
| Certifications | Tested to UL 60974-1 (Report KTi260721U1098, Guangdong KAIXU Testing Technology) |
| Warranty | 3-year limited warranty |
How It Compares
| MIG-140 Pro (Simder) | YesWelder FLUX-135 | Typical gasless 3-in-1 | |
| Price | $119.99 | $109.99 | $80–110 |
| Processes | 5-in-1 (Gas MIG + Flux + Lift TIG + Stick + Pulse) | 3-in-1 | 3-in-1 |
| Gas MIG | Yes (gas tube included) | No — gasless only | No |
| Pulse mode | Yes | No | No |
| SPOT spot-welding | Yes (timed 0.3–5.0 s) | No | No |
| Max spool | 10 lb | 2 lb | 1–2 lb |
| Voltage | 110V + 220V | 110V only | 110V |
| Best for | Gas+gasless all-rounder | Budget gasless | Simple welding |
Key Technical Features
Can it do both gas MIG and gasless flux core?
Yes. Use shielding gas with solid wire for clean, low-spatter shop welds, then switch to flux core wire when you are outdoors, in the wind, or out of gas. Most welders at this price only do one or the other.
What does Pulse mode do, and when can I use it?
Pulse alternates the current between high and low, cutting average heat and spatter for smoother beads on thin metal. It activates on flux core MIG, Lift TIG, and Stick (not on gas MIG).
How does the SPOT welding timer work?
In MIG mode, set the spot time from 0.3 to 5.0 seconds and the machine feeds, welds, and stops automatically — ideal for tacking sheet metal panels without overheating the joint.
Why does the 10 lb spool matter?
Most compact welders cap out at 2 lb spools, so you stop mid-project to swap wire. The MIG-140 Pro takes up to 10 lb spools — fewer changes, less waste, and better value on wire.
Is it really portable?
Yes. The bare machine is 9.8 lb (4.43 kg), and the full box is 17.31 lb (7.85 kg). It fits in a trunk and carries to the job in one hand.
Real-World Use Cases
Car body panels keep warping — what helps?
SPOT mode tacks the panel in place with a timed weld so you can check fitment before committing, and Pulse keeps the heat down for the final pass. The 110V input means you can work at home, not just in a shop with 220V.
I do mobile repair work — is this the right machine to carry?
Yes. At 9.8 lb bare weight it is genuinely one-hand portable, runs on whatever outlet the customer has (110V or 220V), and the 10 lb spool means you rarely stop to change wire on site.
Small shop fabricating frames and brackets?
Good fit. Use gas MIG for clean production welds, flux core when you step outside or out of gas, Lift TIG for precise joints, and Stick for thicker or rusty stock — all in one machine.
Frequently Asked Questions
What's included in the box?
MIG welding torch, 0.5 lb flux core wire, 0.5 lb solid wire, electrode holder, ground clamp, gas tube, 220V conversion cord, and operation manual.
Can it weld with gas AND without gas?
Yes. Connect shielding gas and use the included solid wire for clean gas MIG, or load flux core wire for gasless welding outdoors or in the wind. One machine covers both workflows.
Can it weld aluminum?
No — this model is built for steel, stainless, and everyday alloys. For aluminum welding, look at Pulse MIG models like the SD-4050 Pro, which welds aluminum without a spool gun.
Is Pulse available in every mode?
No. Pulse activates on flux core MIG, Lift TIG, and Stick. It does not apply to gas MIG — use standard MIG settings there for the cleanest gas welds.
Do I need to buy a TIG torch separately?
For Lift TIG, yes — a WP17V torch is sold separately. The machine, MIG torch, and all listed accessories are included in the box.
Is it good for beginners?
Yes. Pulse and SPOT automate the tricky parts of thin-metal welding, the dual-voltage input removes outlet worries, and the 10 lb spool cuts down on interruptions while you learn.
What's include in package
- MIG welding torch × 1
- 0.5 lb flux core wire × 1
- 0.5 lb solid wire × 1
- Electrode holder × 1
- Ground clamp × 1
- Gas tube × 1
- 220V conversion cord × 1
- Operation manual × 1
SSimder 5 IN 1 Welder
Pulse Mode Applicable
2lbs&10lbs Wire Spool Supported
What you will get done with MIG-140Pro
Key Technical Features
Can this welder weld aluminum?
No. The MIG-140Pro is a DC-only welder built for home garage, auto body, and farm projects actually use. For everything else — mild steel, carbon steel, stainless steel, cast iron, and titanium — the MIG-140Pro welds them all.
Is this welder good for a complete beginner?
Yes — the MIG-140Pro was designed with first-time welders in mind.
(1) Synergic MIG mode automatically matches wire feed speed to your voltage. (2) Spot Timer gives you precise short bursts for tack welds.
(3) Pulse mode delivers controlled heat.
Does it come with a TIG torch?
No, the TIG torch (WP-17V or WP-26V compatible) is sold separately.
What does Pulse mode actually do on this machine?
Pulse mode gives you controlled heat input by pulsing the welding current instead of running it continuously. On the MIG-140Pro, Pulse is available on Flux Core, Lift TIG, and Stick modes.
How often do I need to change the wire spool?
The MIG-140Pro accepts both 2 lb and 10 lb spools. With a standard 2 lb spool on a typical portable welder, you might reload every 1-2 projects. With a 10 lb spool in the MIG-140Pro, most home users go 4-8 weeks between spool changes.
