Hey y’all, I’m super new to laser beams world! I’ve recently installed a JTech 5V laser to my Spakeoko XXl. And I’ve watched a few videos on how to setup everything in Lightburn. I have been able to get my computer to talk to my laser and machine. And I’ve even been able to get it to fire on a test piece. The issue I’m having is when I run the “focus test” it doesn’t burn the wood at all. The laser fires and it moves as it should but doesn’t leave any traces of burning. And I have the Laser base approx. 3-5mm from the surface of the materiall. I’m pretty sure im just missing something simple but I can’t seem to find anything out-of-sorts. So, any help would be greatly appreciated!
That seems a wee bit too close. The measuerment is usually from the body of the laser, and not from any nozzle.
JTech for the “7w” module, which should be run as 5w if you want more than 100 hours out of it. I bolded some of the text…
The laser module has an adjustable lens at the output aperture. Turn clockwise to adjust the lens into the housing and counter clockwise to adjust it out. The high efficiency lens has been designed to provide the smallest spot and highest power density at about 1" (25mm) to 3” (76mm).
So’ from the nozzle of the laser (not the plastic housing) to the material should be between 1and 3"? Also, there is an adjustment on the laser itself that I need to focus? And if I’m to close, would it not just burn right through instead of not at all?
All modules I have seen have metal housings, some with plastic windows. It is to be measured from the bottom of the housing. My (air assist) nozzle on all of my diode machines are about 5-8mm from the material.
It may or may not have a manual focus ability. The new modules generally have a fixed focus, but my Genmitsu came with an adjustable focus laser.
If it is too high or too low, it likely will not burn through. There is only a small zone where the power is concentrated enough to actually burn through the material at a given speed.
