Loss of Precision on the Right Side of CNC Table (EX Controller)

[nmathon]

Hi everyone,

I’m encountering an issue with my CNC machine and could really use some advice.
I upgraded to the EX Controller a couple of days ago. The problem is that as I make cuts further to the right side of the table, I notice a significant loss in precision. Shapes become distorted, and dimensions are off.

I’ve already checked to ensure the table is square, and everything seems aligned. I cut the calibration project provided by Avid and I get exactly the same diagonals. However, the problem persists, and it’s affecting the accuracy of my work.

I cut two spoons, one on the left side of the table and one on the right. As you can see in the photos, the right-side cut turned out quite strange (circles not concentric, lines are not straight…):

LEFT:

RIGHT:

Has anyone experienced something similar? This problem was not existing befor my migration to the EX Controller. I used this GCode many times before. Any troubleshooting tips or advice would be greatly appreciated!

Thanks in advance!

[nmathon]

Just for clarity, I tried to highlight some weird spots on the second picture:

[Eric]

I would get in touch with support on this. They have some troubleshooting steps you can go through.

[nmathon]

Thanks, I’ll send an email then.

[nmathon]

Support did not get back to me yet, but going through the troubleshooting guide, I found the issue.
The belt of the right pulley was dead. I checked each one of those belt while I was replacing the motors but apparently one died in the first cut.

I replaced the belt and now it’s spot on.

[Eric]

That’d do it for sure! Glad you found the issue.