hi all iv just got a 500x500 grbl machine and it isnt cutting rite , i have fitted another laser [ lasertree 80w-AA-pro] and it still isnt rite , iv gone through all the settings with no luck
Doesn’t tell us anything that could help us help you fix the issue. Photos would be good …
You know the issue, we are totally clueless on the problems you’re having, so you need to be more specific, like what isn’t right?
1 Like
like im trying to cut 5mm ply but all it doing is burning the wood with little cut depth , iv set the correct higth following lightrees settings and still cant get it to cut all the way through , 100% power and i started at 300mm down to 100mm and still no joy
plvcrmn: like im trying to cut 5mm ply but all it doing is burning the wood with little cut depth , iv set the correct higth following lightrees settings and still cant get it to cut all the way through , 100% power and i started at 300mm down to 100mm and still no joy plvcrmn: like im t…
The output of your laser module is only 10W, it’s input is 80W.
First thing with any laser is to ensure focus. Depending on the manufacturer to set this correctly seems to be more of a crap shoot. There are lots of videos on how to do a ramp test to ensure your focus point. Such as this one from the Louisiana hobby guy.
It’s just good to have a known when you have issues and I’ve learned that the Chinese are not always very consistent.
Is this for focus? What are Lightrees settings?
Where did the power/speed combination come from, materials test?
It’s suggested that you get in the habit of using some type of unit with your entries. It could be mm/s, mm/m, mm/h or mm/day… mm/year!.. 
Since it’s a visible light led, I’d have to assume it’s in mm/m, but it’s only a habit when you enter or post questions that takes only a couple keystrokes to clarify.
I don’t know these machines and I think @misken can probably give you some valid values for what you are doing … for 10W at 100mm/m (1.6mm/s) seems a bit fast, don’t know, but I’m not a wizard on these when it comes to power and speed.
Hang in there.
firstly i didnt say it was 80w i was giving the model number thinking people would know its 10w
lighttrees setting say 240mm/m min to 330mm/m max with 1 pass set at 2mm distance , i have also cheched the s value max in both settings and they are both at 1000
Did you do a ramp test to ensure your focus is correct.
Everything else can be perfect, but if the focus is incorrect, it won’t perform as expected, if at all.
I didn’t know it was 10W.
Was the original led module an 80W module? Maybe your motherboard can’t supply enough current to the new module?
Did you also have these issues with the previous, unknown module?
Maybe @MikeyH can help shed some light on this, he’s more of an led grbl type person.
- I cannot believe your laser focus distance is 2mm, even if you have air assist with a nozzle. Are you sure it is not 20mm instead? Did you get some sort of gauge with the laser to set it with? Diode laser types are typically set measuring from the material to the bottom of the laser module body.
- Do you have Air Assist? Cutting performance is dramatically lessened without it. It also helps keep the laser lens clean.
- Assuming a 10w laser, your power and speeds are probably closer to what would work with 3mm plywood. 5mm is near the upper limit for a 10w output laser (and no, we would not know yours is that). You get into a depth of focus problem (not enough of it) trying to cut material that thick. With air assist, I cut 2.8mm Baltic ply with 800mm/m, 80% power, and 5 passes. Cutting in one pass is only good for Show and Tell demonstrations. My S30 10w machine can cut 18mm MDF in a single pass, but I don’t even try. Think of those videos as “How To” instead of “It Can” and you will be happier.
- @jkwilborn is asking the right questions. It will be good to do some research for the answers.
SUMMARY:
I am guessing Focus is what needs to be fixed. If you do not have air assist, get it if you can for your machine.
Test your focus my making a few small boxes and raise the laser head +2mm to cut each one. I also recommend you test with 1,8mm, 2.8mm, or 3.2mm Baltic Birch plywood or a MDF until you get things ironed out.
Let us know what you discover. By the way, I think an 80w input is for a 5w laser output power. That would definitely make a difference in your cutting ability.
This topic was automatically closed 30 days after the last reply. New replies are no longer allowed.