Cnc 3018 wrong size

[ilianov]

hello i recently discover this amazing sofware and i´m trying, but i have a scale problem: imagine i want to burn a rectangle with 230 x 130 mm, but it burns a much less size…
cnc 3018
here are the sentings:
$0=10
$1=25
$2=0
$3=5
$4=0
$5=0
$6=0
$10=0
$11=0.010
$12=0.002
$13=0
$20=0
$21=0
$22=0
$23=0
$24=25.000
$25=400.000
$26=250
$27=1.000
$30=1000
$31=0
$32=1
$100=800.000
$101=800.000
$102=800.000
$110=2500.000
$111=2000.000
$112=1500.000
$120=45.000
$121=45.000
$122=48.000
$130=300.000
$131=180.000
$132=44.000

ok

$0=10
$1=25
$2=0
$3=5
$4=0
$5=0
$6=0
$10=0
$11=0.010
$12=0.002
$13=0
$20=0
$21=0
$22=0
$23=0
$24=25.000
$25=400.000
$26=250
$27=1.000
$30=1000
$31=0
$32=1
$100=800.000
$101=800.000
$102=800.000
$110=2500.000
$111=2000.000
$112=1500.000
$120=45.000
$121=45.000
$122=48.000
$130=300.000
$131=180.000
$132=44.000

ok

Grbl 1.1f [’$’ for help]
inthink it must be something wrong in the defenitions of the machine, i cant figure why.
thankz

[Rick (Rick James)]

but i have a scale problem: imagine i want to burn a rectangle with 230 x 130 mm, but it burns a much less size…

inthink it must be something wrong in the defenitions of the machine, i cant figure why.

Welcome and thanks for the post. You said, you…“want to burn a rectangle with 230 x 130 mm”, what size did you get as the result? What Device Profile have you selected and what are the settings for this profile?

This is worth a read if you haven’t already: https://lightburnsoftware.github.io/NewDocs/CommonGrblSetups.html

[ilianov]

where i can see that?!..

[ilianov]

the burned size is 110x40 mmm -/+… thankz for a rsponse

[Rick (Rick James)]

where i can see that?!..

I assume this is referencing my question about your choice for Device Profile. What did you select when setting up LightBurn for the first time? If you click the ‘Devices’ button in the ‘Laser’ window, you will see what you have selected when setting up devices. You can then edit this to ensure you have things set correctly. The document link I provided above is to our new (in progress) documentation that will walk you through the process.

https://lightburnsoftware.github.io/NewDocs/AddingYourLaser.html

[ilianov]

gbrl if the memory donnt…

[Rick (Rick James)]

No idea what you are saying here. The images I show above are for example only. You will need to match the device settings to your system which you said is running grbl 1.1e, correct?

[ilianov]

i´m crazy, grbl is 1.1f

[Rick (Rick James)]

OK, so you should be able to use the GRBL device profile in LightBurn. Is this the one you selected when initially setting up?

[ilianov]

yes it is /grbl…

[Rick (Rick James)]

If you haven’t already, this is a good post to review for your setup.

Configuring a 3018 CNC for use with LightBurn

3018’s are pre-configured for use as CNC machines, not lasers, so their settings and speeds will likely need to be changed to give you acceptable results with LightBurn. To see the existing settings, you can type $$ into the console in LightBurn and press enter, or go to Edit > Machine Settings. Both are showing the same values, but the Machine Settings view in LightBurn is a little easier to use. The settings you’ll most likely need to change: $32 (laser mode) - Set this to 1 (or true / enab…

[LightBurn (Oz)]

$100 and $101 set the number of steps the machine has to take to move 1mm. If your output is half the expected size, you’d double those values.

You said 110 x 40 instead of 230 x 130, which is quite strange, because those aren’t the same shape at all - The X is about half, but the Y is less than 1/3rd. Did you enable rotary mode accidentally? Does the machine skip when it runs?

[ilianov]

i saw the size wrongly… my bad
i made another test and in LB the draw has 100 x 30 and in it burns 50 x 15 … any solution for this to happen?!
thankz

[ilianov]

i changed the values of $100 and $101, its perfect now…
thankZ for the help…