Some Calibration Questions

Troubleshooting
21

I’ll try that and report back.

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22

One other thing you can try, lower the retract value to 200, it should not pull the belts in, then extend, retract, extend so all the belts are right out. Then reset the retract to your normal value and do another retract while maintaining a little pressure on the belts. What this will do is ensure the belts are packed properly. What I’m thinking, maybe the belt is overlapped slightly, or something is holding the belt out so when it gets to a that point it lets extra belt out, which the Maslow can’t compensate for.

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23

I’ve had issues recently with the superglued belt ends coming out of the spools. I’m not sure if the Lithium grease I applied is responsible for softening the glue - it never happened before that. When this happens with several turns on the spool, it is not obvious that it is disconnected - it can appear to wind in and out properly for much of the time.

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24

I extracted the belts out completely and retracted them to confirm that the belts are packed around the spools correctly. I reran calibration with no change to the belts failing to tension on the Y axis on the last calibration pass. Calibration failed again. I pressed Apply Tension and that worked. I prepared a little test cut of a rounded rectangle 40mm x 80mm with a 30mm circle in the middle. It cut beautifully with only one problem. The 80mm dimension along the X axis is only 79mm.

Is this a normal deviation? Could it be caused by my problems getting a clean calibration?

Thanks to everyone for your responses and help. Any suggestions regarding some next steps to improve my accuracy would be appreciated.

Here is my test cut: https://photos.app.goo.gl/CRnPGTzb6p9XHa4z6

25

There is a manual adjustment you can make in the maslow.yaml file
FluidNC then Config Items Maslow_Scale_X amnd Maslow_Scale_Y.
Mine are set to 1.005 and 0.997 but this is a variable dependant on you setup.
With 1 and 1 set start mark move a metre or two, mark end. Then measure distant
distance theoretical/ distance measured should give a good value

26

Thanks!