With the PWM output you are able to control the laser output power.
I dont know what software you are using to generate the code but you just need to change the "spindle speed" and that will be propagated to the PWM proportionally.
I managed to do some engraving generating the gcode with vectric. I've also used the "mach3 laser" post processor that Jtech have on their site.
In my opinion it needs some improvement. When machine moves to the place where it will start to cut, it activates the laser but stays on that place a few moments, for instance if I want to cut some balsa wood it will burn the wood too much while in that position.
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Maybe someone can help improoving this post processor it would be great! Jtech have just released the post processor for UCCNC, I will give it a try as well.
As for picture engraving with laser, i've tested the PicLaser software but i was unable to set it to my machine, by the way its an 840...
Again if someone could help on their experiences with picture engraving it would be great!
Well for now this is my 50 cent on this matter. Please feel free to comment and ask questions if needed.
great! Many thanks for sharing your experience! This really looks succesful!
Unfortunately my configuration is different: WinPC-NC USB (different control board) plus EstlCAM. I was not able to transfer the instructions for Mach3 to WinPC-NC yet.
One possibility to adjust the GCODE appropriately is using LaserCAM (see thread
, unfortunately in German).
As soon as I got my Laser head (I'm in favour of the 6W Laser from Opt Lasers) I will try LaserCAM and report.
Last question: do you use a laser tight housing? And if so could you share some information about it?
one possible hint for the problem with the waiting when the laser starts:
Typically in the Software there is a delay entered for the software to wait after the spindle to start.
The purpose of this is to ensure, that the spindle reached the correct rpm. I guess for the laser this is not really needed. Maybe you can try to switch this off.
SC 600/2; SolidWorks; UCCnC und UC100; EstlCam und Arduino Steuerung; KRESS 800kfme;