The inverter welding machine TW21602 by Total features a current intensity adjustment switch (ampere) that allows you to achieve optimal results during work. It has fan cooling, thermal protection, an LCD screen, and is also intended for amateur use. Additionally, it incorporates a thermostatic switch for overload protection and is suitable for electrodes from 1.6 to 4.0mm.
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I have been using it for two to three weeks and I use it every day for several hours. The machine is easy, convenient, and sticks very well, better than the other inverters I have, which are twice the size for the same or even lower power.
Its small size makes it ideal for work outside the workshop. It is also so easy to use that I believe even a beginner will quickly stick decently with it.
Although sometimes I overdo it, it never overheated. Of course, time will tell about its reliability.
The flaw I found is the excessive noise, annoyingly loud. I have to constantly open and close it to avoid hearing it. That's why I deduct one star.
*The welding is not like the one in the photo on the box, but with a plastic front panel, it may be a newer model.
For this price, I consider it a worthwhile purchase.
Here is a presentation video I made for it: https://youtu.be/WiZnF62f-4c
It operates without any interruptions with a 2.5mm electrode. The manufacturer guarantees a 100% duty cycle at 88A and they are telling the truth. I wish they would include this information in the product description, not just the duty cycle at 160 Amps. It would have saved me a lot of time searching, as I would have bought it earlier.
The external casing is metallic, providing good electromagnetic shielding, and the electromagnetic pulses produced by the inverter do not cause any issues with nearby devices. I mention this because some slightly more expensive ones have a plastic front panel. Additionally, the inverter has a soft start, which is not always present in budget welding machines.
The cables are very short. Personally, they suit me because I do welding of small components on a specialized welding table. For remote work, longer cables will need to be purchased.
The anti-stick system works perfectly. The electrode has never stuck to the workpiece and the arc is easily created.
The grounding clamp is of good quality as it has a copper braid/rope inside, which helps the amps flow more easily. Both cables were measured with a multimeter and their resistance was zero, although they do get slightly warm when used at 90 amps.
With a 2.5mm electrode, I can say that the quality of the weld is very good. I haven't used thicker electrodes, but I believe it will work well with 3.2mm electrodes as well, to a certain extent.
If your work requires the use of a 2.5mm or smaller electrode, and occasionally a 3.2mm electrode, then this welding machine is a very good purchase. If you constantly need 3.2mm electrodes, it is advisable to choose another one with a higher duty cycle of 30% at 160 Amps.