Hi everyone it’s my first time here. I’ve recently made my first laser engraverusing parts I bought online. I am using the neje 20w laser module and a mks dlc32 v2 controller board. I believe I have installed GRBL correctly on to it. Sadly I can’t seem to make it work properly when it does deceide to engrave it moves terrebly slow no matter what speed I establish on to it. Speed is probably the issue I wanted to adresse first even though I have a few other problems such as power output control and general settings. I would really appreciate any advice on settings or to know if there is a hardware issue I’m not seeing. If you guys need a video or an image just say and I’ll send it as soon as I can.
First order of business: does your machine engrave dimensionally accurate burns? Meaning 10mm in workspace is 10mm when burned?
Can you run these commands in Console and return output?
$I
$$
Thanks for the reply. I couldn’t really say if the cuts are accurate because they are so slow even when my power is at 6% it just burns through the wood and things that should take minutes to do it takes hours. I don’t know how to properly meassure if the engraving distance is correct, what i did (I don’t know if this is the correct procedure) I turned on the laser manually and selected in the move option 100mm after that I meassured the line that was engraved and got a value of 32mm so I think that’s probally one of the problems at least, I don’t know how to change it sadly. I’ve ran both of the commands in the console and I got these outputs:
$I[VER:1.1h.20190830:]
[OPT:V,15,128]
Target buffer size found
ok
$$
$0=10
$1=25
$2=0
$3=0
$4=0
$5=0
$6=0
$10=1
$11=0.010
$12=0.002
$13=0
$20=0
$21=0
$22=0
$23=0
$24=25.000
$25=500.000
$26=250
$27=1.000
$30=1000
$31=0
$32=0
$100=31.200
$101=31.200
$102=250.000
$110=2000.000
$111=2000.000
$112=500.000
$120=10.000
$121=10.000
$122=10.000
$130=200.000
$131=200.000
$132=200.000
ok
Cheers.
These two define the number of steps per millimeter of movement for X and Y respectively. Did you attempt to tune these values?
If your measurements are correct. I suspect these values should be closer to 100.
Once the dimensions are corrected for this will have the side effect of seeming to increase speed.
Once you get the dimensions correct you can tune for performance.
These acceleration values are fairly low for a laser machine. While this would make a difference when making a lot of rapid movement changes I wouldn’t expect this to be the major cause of the symptoms you’re seeing.
These are max speed settings. You can tune these empirically once your dimensions are settled. Keep tuning upward until you start missing steps, then back down a good bit from that.
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