# Cannot send gcode file to A350; Laser cut mode **URL:** \ **Category:** Snapmaker Luban\ **Created:** [January 18, 2021, 3:38pm UTC](https://forum.snapmaker.com/t/cannot-send-gcode-file-to-a350-laser-cut-mode/14593 "2021-01-18T15:38:40Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![ramaker](https://avatars.discourse-cdn.com/v4/letter/r/da6949/32.png) [@ramaker](https://forum.snapmaker.com/u/ramaker)\ **Post date:** [January 18, 2021, 3:38pm UTC](https://forum.snapmaker.com/t/cannot-send-gcode-file-to-a350-laser-cut-mode/14593/1 "2021-01-18T15:38:40Z")
I’m preparing grafics for laser cut with LightBurn. Then create a gcode file and load it into Luban. It is displayed in the workspace - everything ok. Now I want to send it to the A350 via WiFi ----- and ----- nothing !! I cannot send it! The gcode file is correct, because I can cut it direct from Luban. The same procedure works in 3D printing and CNC mode. There I’m using Simplify3D or Fusion360 to create a gcode file. No problem to send it via Luban, via WiFi to the A350. What is the difference between Laser cut and 3Dprint / CNC? K.D. ---
**Author:** ![sdj544](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.snapmaker.com/sdj544/32/11365_2.png) [@sdj544](https://forum.snapmaker.com/u/sdj544)\ **Post date:** [January 18, 2021, 5:47pm UTC](https://forum.snapmaker.com/t/cannot-send-gcode-file-to-a350-laser-cut-mode/14593/2 "2021-01-18T17:47:49Z")
Is your filename ending in .nc? Laser needs to be .nc, cnc .cnc and 3d print .gcode -S ---
**Author:** ![ramaker](https://avatars.discourse-cdn.com/v4/letter/r/da6949/32.png) [@ramaker](https://forum.snapmaker.com/u/ramaker)\ **Post date:** [January 19, 2021, 6:38am UTC](https://forum.snapmaker.com/t/cannot-send-gcode-file-to-a350-laser-cut-mode/14593/3 "2021-01-19T06:38:12Z")
Sure ! The file format is correct. It was created by LightBurn and the extension is \*.gcode. The problem is not “loading in Luban” - this works. The gcode is interpreted correct and is shown on the workbench. (like gcode files I created in Simplify3D or Fusion360 for 3D or CNC) But I cannot send the Laser file to the machine A350 itselfe. For 3D printing an CNC the WiFi sending works So I cannot understand why WiFi sending for Laser do not work. K.D. ---
**Author:** ![sdj544](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.snapmaker.com/sdj544/32/11365_2.png) [@sdj544](https://forum.snapmaker.com/u/sdj544)\ **Post date:** [January 19, 2021, 6:42am UTC](https://forum.snapmaker.com/t/cannot-send-gcode-file-to-a350-laser-cut-mode/14593/4 "2021-01-19T06:42:25Z")
As I said if the extension is .gcode that is not correct. For the Luban to send to the SM (or read from a usb) it needs to end in .nc. It will load to the workspace but it won’t send. The laser head also needs to be connected. -S ---
**Author:** ![ramaker](https://avatars.discourse-cdn.com/v4/letter/r/da6949/32.png) [@ramaker](https://forum.snapmaker.com/u/ramaker)\ **Post date:** [January 19, 2021, 6:43am UTC](https://forum.snapmaker.com/t/cannot-send-gcode-file-to-a350-laser-cut-mode/14593/5 "2021-01-19T06:43:21Z")
**Uupppsss …** … **@sdj544: If think I don’t read your reply correct.** I used the file extention \*.gcode – not \*.nc – maybe that’s the reason. I’ll try it today morning. K.D. ---
**Author:** ![ramaker](https://avatars.discourse-cdn.com/v4/letter/r/da6949/32.png) [@ramaker](https://forum.snapmaker.com/u/ramaker)\ **Post date:** [January 19, 2021, 7:50am UTC](https://forum.snapmaker.com/t/cannot-send-gcode-file-to-a350-laser-cut-mode/14593/6 "2021-01-19T07:50:57Z")
@sdj544: You were absolut right !! With the extention \*.nc it works !! Strange - the file and the data are exact the same. Thank you for your help ! regards K.D.