Have you got any control of the laser power at the moment? You should be able to turn the laser on/off using the spindle on/off button and you should be able to vary the power by changing the spindle speed.
In Mach2, go into Config->Logic and check the PWM base freq is set to whatever your laser needs. If you laser will accept a range of frequencies then use the lowest the laser will accept. This will improve the resolution. If you have an oscilloscope then it would be a good idea to have a look at the PWM output and watch the changes with different spindle speeds. |