CNC has unexpected results when printing first job

Hey folks! Finally got my CNC up and running (custom built with all Open Builds Parts and some 3D printed extras). I am using the Black X32 for a controller. My print area is rather large, so I started in an open space with the router off and in the air just to make sure the motions looked appropriate before running my Hello World Code. I set zero for xyz, but when I run the program, the router takes off way outside of where the project boundaries would be and where xyz was set. If I hit go to zero, it returns to the correct position. I have believe the settings are correct in the OB Cam before I export the gcode.

Any ideas? Thank you in advance

 

Thank you for your quick reply as always. Your question led me to the issue. Because my X and Y axis are long, I had to go to a bet. In the Grbl profile all 3 axis were set to 200 steps per mm (and screw driven), which of course was not correct for the belt driven axes. Once I changed these two axes to 26 steps per mm everything was resolved. Thank you again for your help on the forum. I think it is one of the greatest reasons I use tons OB parts due to the technical support help on here.

Jesse

 

Thank you!

I ran my first "Hello World" from the CAM and it was perfect. However I attempted to use another tolerance testing design in Fusion 360, built a profile and exported the gcode. The machine seems to run correctly for The X, and Y axis, but the Z axis seems to bury the bit about 1/4 inch into the wood, when it is suppose to be set to remove 1mm at a time. I have played with the profiles in F360 a lot and I think everything is correct. I know this forum is not for trouble shooting F360, however I am not sure where the issue lies and thought with the OB grbl settings and F360 gcode you might be able to see what I am doing wrong.

Thank you in advance! Appreciate you folks as always.