MPCNC does not start cutting in the correct place

Mostly Printed CNC - MPCNC Troubleshooting
1

Hello everyone,

MPCNC newb here. So far I have only generated 1 gcode file. I followed a tutorial from VCarve to create a sign and that worked fine. So I decided to try one myself and created a some gcode to do a simple tray. When I go to print it the gantry moves way too far and hit limits.

I turn on my MPCNC machine at my desired 0 point and I do the Z axis probe. The Vcarve software is setup for the 0,0 point to be on top of the material at the botom left corner. The Bowl and Tray bit I was using is from Whiteside and its in inches in Vcarve, I tried to use the mm and inch GRBL post processor and tried to create the tray in both mm and inches because I thought that was the issue but regardless of what I set it to be it moves to the right and hits limits. I will post my gcode files here. I am trying to figure out what I am doing wrong.

2

Probing only defines Z. You also have to tell your controller that X/Yv are zero where it is.

3

I thought that when I turn on the CNC machine the current placement of the gantry for x and y is the 0,0 point. I will try to set 0 for x and y before i begin to run the Gcode. Thanks.

1 Like
4

No, it isn’t. The machine doesn’t know where it is. :stuck_out_tongue:

5

You are absolutely correct. As soon as I zeroed out the X and Y it started working correctly. I guess I forgot that step.

2 Likes
6

Add the stuff from the milling basics page to your start gcode. Then you don’t have to remember to manually do it each time. The machine will do it for you.