Y Axis accuracy issue

Troubleshooting
1

Hi all,

Started cutting for the first time today. Setup my machine using the calibration video and all seems ok. Went to cut a test piece of a 200mm disk and ran into an issue. The x axis measures fine however the y axis is 210mm. Using Fusion to create my Gcode with the default MaslowCNC preset in fusion. It looks like it is stretched when it is inputed into the M4 GUI. Anyone able to assist?

Thanks

IMG_4680
IMG_46801864×789 67.2 KB

2

IMG_4679
IMG_46791190×658 43.6 KB

3

IMG_4678
IMG_46781920×2560 539 KB

Will only let me upload one photo at a time.

4

I had something similar with the first test I did a couple of days ago - I also had only done the minimal callibration and knew it was slightly off from my measured frame size.

I don’t suppose you have the calibration log? Or alternatively, have you dowloaded the maslow.yaml file from the board and checked the value against what your frame actually is?

I suspect that’s the first thing to rule out.

5

Hi Dave,

Thanks for the info. I did a calibration 800 x800, 7x7.

How can I download the yaml file to check?

Should I do another calibration?

Thanks

6

(I’m new to Maslows so this is just what i’ve learnt - but hopefully it’ll help):

When connected to the device, on the FluidNC tab there is a file system tab, and from there you can download the maslow.yaml file.

I would think another calibration is needed if the dimensions of the frame that the maslow.yaml file has don’t match your own measurements (it’s where it saves it all after calibration).

If you do calibrate again - there is a ‘Save Serial’ button at the bottom of the controls - it would be good to save the logs from the calibration.

7

Thanks Dave.

I have downloaded the yaml file. Sorry to ask the obvious but what parameters are the frame dimensions?

Tried doing a new calibration size 1000x1000, 9x9 grid. It tried for 2hrs but couldn’t calibrate so I had to abort. Will try again tomorrow with the original 800x800 but with 9x9.