i am still struggeling with the quality of my cutting/engraving and can not find a perfect focus.
I bought the Laser cutter second hand and have not changed the tube yet. The Tube is 160 Watt - 1850mm long.
When i place a white painted sheet between the tube and the first mirror and fire once, the result looks like this:
The diameter is about 8mm.
I was expecting an even burnt spot - not an artwork like this.
Did anyone try that yet? How is the spot supposed to look like?
Thanks in advance!