I cannot get my machine to cut a straight line. My calibration shows that it is good, I have zero deletes, zero shifts and an error of .231 ( I have calibrated many times, always restoring factory settings before calibrating). I know my issue is not material warping because it will run an identical, slightly curved line, with a marker in-place of the stylus. I have also started noticing that even my designs come out slightly curved, its harder to see than a straight line but does show up. I have also done a belt tension test and it appears to be good as well. I’m starting to think the math is not correct with stepper motors of the machine. I have reached out to Andrew but haven’t heard back. I have a lot of custom sign orders for Christmas and would really like to get this issue resolved, so I don’t have to cut by hand, any suggestions would be much appreciated.
Hey there
Sorry I missed your email.
There are a couple things that can cause the curved line
1st. Is calibration issues but sounds like you have a really clean calibration in place.
2nd is mechanical interference
- Make sure your belts are both tight. https://youtu.be/iPsAKDX8_WI?si=CF8CHhelG4fUmhQy
- make sure that the red drive arm is both snug (screw on the back side) and not dislodged and rubbing on the black arm
- ensure your torch cables are free to move across the entire area of movement
3rd You can up the driver current a little to provide better positional holding. Particularly if you have a large heave CNC style torch on the machine.
Go to Settings->Machine settings->Driver Current->adjust X and Y to 1850 save on the way out
hope this helps
Cheers
AM
Thank you Andrew, I will give those things a try. I appreciate the response!
I checked all the things in your list and adjusted the driver current but it didn’t seem to change anything. It really seems like a calibration issue but it shows it being good, I checked the straightness of the calibration square and it looks good as well. Here is a picture of my latest calibration data. Do you see anything in there that could be an issue?
Thanks!
Hello Andrew, I’m having the exact same issue. I’ve worked through everything you’ve suggested but I get the exact same slight curve every time. Hoping you can help me work through this, thanks!