How can I tell if my laser is bad?

[xchrisd]

@crua9 maybe you look for it at the forum or use trail and error.

Laser for cutting acrylic sheet

I ended up lasering the lettering and CNC’ing the outline. It came out very nice. I’m using black on white .060" thick sheet. The power level needed was very low (20%) with the 1600mW laser. I ran combos from 90% to 10% in 10% increments with speeds from 3000 to 500 in 500mm/min increments. There were close competition her and there where I hit good combos but the cleanest, clearest lettering with 0 smoke trails was 20/500. I even went down to 100mm/min from 500 in increments of 100 yet 20%/500m…

I am sorry i misunderstood you, i thought there is absolutely no laserbeam coming out.