I've been using a 30 watt Epilog legend 32 for the past few years. Engraves beautifully. Or did until recently, but that's beside the point.
How does the engraving of the chinese lasers using DC-excited glass tubes like Boss or Rabbit compare?
I've been reading that the spot size out of the tube tends to be larger on DC excited tubes, resulting in a larger final spot size on work. But can that be mitigated with focus lenses? Is there any kind of rough equivalent like "2 inch focal lens in a DC excited machine is like a 3 inch in an RF" or something along those lines? Or does it not work that way?