Neje max 4 extended axis

[Jo143 (Jo)]

I have a new neje max 4 with extension and i tried to extend axis in lightburn and now my laser is moving very fast and hitting the sides hard. I dont want to break anything. How can I fix this? Please help and thanks

[misken (Melvin)]

Sounds like you changed the wrong setting, maybe? Show your machine and LightBurn settings.

[Jo143 (Jo)]

thanks for replying. i took a screen shot of every thing i think i changed or tried.

[Jo143 (Jo)]

[misken (Melvin)]

It seems you changed the units from mm/min to mm/s. Check the main LB settings.

[Jo143 (Jo)]

You are correct. I changed it back and nothing has changed. The laser is traveling very fast and aggressively, even when homing.

[parsec (FerAS)]

Did you change other GRBL settings?
You need to change your device to GRBL not GRBL-LPC.

Set your X travel to 750 and Y travel to 1030.
Try changing your X Max rate to 6000 and Y Max rate to 3000 then test.

[Jo143 (Jo)]

That fixed the speeding! But it is still traveling to the edge and hitting normally and grinding. So helpful ty so much

[Jo143 (Jo)]

I also change tge working size to 750.0mm width and 1030.0mm height. Im pretty sure this is wrong

[Jo143 (Jo)]

Then there is this
Max requested distance 200.0000 and axtual distance 200.0000 gor x axis. Y axis is the same

Uploading: 20241114_185950.jpg…]()

[parsec (FerAS)]

Max4 is originally 750 x 460
What is the size of your extension?
You have to wait for the pics to upload.
Type $$ in Console and post here the output.

Change your origin to lower left.