The main difference between expensive and cheap mig welders is the ease of use. When you have a quality welder, you are likely to have good results from the first welding experience. However, this may not be the result if you do not buy a quality welder.
It is not advisable to buy a mig welder in local supermarkets or on eBay or any other eCommerce site. You need to have done enough research in order to get high quality mig welders. This research can be done using online forums or from information that you will get online.
For amperage, consider the minimum amperes that the mig welder needs to operate. Smaller welders of this brand normally have 30amps as the minimum amperage. This is suitable for welding a 1mm sheet. For those that have minimum amperage of over 30amps. They are either very powerful mig welders or very cheap. They are normally used for car bodywork. This information is vital when using ac/dc welders.
You also need to know the workshop power supply when using Mig welders. A quality mig welder should work with 150amps using a 13amp plug. Additionally, the plug should be able to last for at least 1year if it is a great quality mig welder.
Avoid permanently live torches when using plasma cutters or Mig welders. This will help improve the safety of your workshop. When the contactor is not detached from the welder, it means that the torch is constantly live.
The duty cycle of the mig welders should be placed into consideration when you choose to buy one. The period of time it takes to weld before the welder overheats is essential to consider. This will guarantee the effectiveness of your work.
Other factors to consider when buying mig welders are the quality, the manufacturer and the chassis. Does the chassis have wheels that help you move it around the workshop? Ensure you have some of these facts before you purchase your MIG welder.