I only started to use it yesterday! But I was already impressed with the quality and "solidness" of the product!
Because i am unable to carry it around it is fixed on a table. Also, I will add on a lever system so it can be used with a foot lever.
I prefer this unit over the more "fancy" ones with the timers and buttons!
It is easy to get the "feel" for the time you need for different materials.
Somebody said on a review page that you can not use it for stainless steel!
However I did not have any problem with that issue!!
But one has to take into account the "density" and conductivity of the materials to be welded!
I bought several products of Vevor and find that the quality is very good, delivery time pretty fast (for country deliveries) and will do a very good job, as long as the tool is used for what it is designed for!!
If money permits, I will buy more of this company:)