Losing steps

[JAZZCNC]

If it was working correctly and you have changed nothing regards settings etc then it can only really be a mechanical issue. It will either be a slipping motor coupling or the Axis is binding up causing the lost steps.
If it's a different file with different settings then you could just be pushing the machine too hard. To test just lower the feed rate and see if it happens.

It could possibly be electrical noise but It would be random and would have happened all the time.

If not settings etc then I would start by marking the motor coupling and motor shaft to see if you got any slippage.

[Edendale]

When I stripped it down it was sticking at the bottom of travel on Z axis, I lowed the spindle so as to miss out the bottom of screw, I try and do it slower and see if that works ��

[Edendale]

Hi Dean, you were right, I ran a file and lowered speeds & feed and it didn’t lose any steps, guess I’m just going to have to be more patient, I contacted the seller in China about the wiring fault and they sent me a replacement breakout board & stepper driver in case I have problems,
Regards Mike.

[JAZZCNC]

Hi Dean, you were right, I ran a file and lowered speeds & feed and it didn’t lose any steps, guess I’m just going to have to be more patient,

Hi Mike, yes, unfortunately, that's the problem with these cheaper machines, they are great for learning on but they are slow and limit the quality of what can be done. However, if your patient can still give very rewarding results.

[Edendale]

I’m saving up to come see you again ��

[JAZZCNC]

I’m saving up to come see you again ��

Ah ah sorry Mike just realised who you are. . . Lol . . . Yes any time mate your always welcome.