Over Christmas I purchased an A3 pro 5500mw through Banggood (laser mfg date 2017/12).
When I focus the laser, the best I can get is a really thin line about 3mm long by under 1mm wide.
There seems to be a hot-spot in the centre, so it does etch/cut, but the cleanness of the edges is not as good in one direction as compared to the other.
Should the 5500mw laser focus to a dot (or at least not a line)?
Banggood customer service is trying to tell me it's a software issue, but I have a truly hard time believing that (unless the laser is supposed to only focus to a 3mm long line)
(I've posted in the official support group on this forum, but there's no responses there for several days, so I'm hoping for any feedback here)