I have a few questions on the ebay 30 watt fiber lasers, maybe someone can answer.
I see the pictures of the scanning head at the top of it's adjustable post (about 20" above the table), when in use, what is the average distance from the lens to the object to be marked?
Also, do the different lens (150, 200, 300) change this?
Approximately how many passes would it take to etch a hardened steel plate to .001 inches deep?
Thanks in advance for your replies.