We got our 30 watt Chinese fiber laser from an American dealer well known on here back in February. We spent a couple of months learning it (this was our first machine with nothing to compare to). It seemed like it was working correctly as far as we knew although we were only able to mark stainless steel and anodized aluminum. When we tried to mark copper or anything with copper in it we would not get any clear results (it looked blank) which we thought was normal based on research done in this forum on the subject.
Recently another family member purchased the same machine 20 watt from ebay. We were surprised to discover that it works MUCH better than the 30 watt (at less than half the price) with clear black engraving on stainless, copper, brass, bronze, nickel silver, and aluminum. It seems like the other machine with lower wattage has way more power than our 30 watt machine. We have researched this forum high and low but can't find anyone with similar issues. We have tried adjusting various settings inside of EZcad to no avail. Things we have checked: Correct focus, comparing settings between the two machines, and we have called the dealer for help but have not gotten much of any help.
Has anyone in here had anything like this happen or do you have any idea what the problem might be?
Thanks!