moving problem

That I tried with 3A as you told me and the fault still appears. I am reaching a maximum level of despair

I'm going to do it as soon as I can. You mean you think it points to inaccuracies or construction failures?

I ask because I have also thought about it, even that maybe it would be easier to do something simpler like starting with a fixed gantry machine and a bench with a single ballscrew for each axis.

no, no, I made it a gantry type which caused me a lot of problems at the beginning and I had to upgrade to the latest version of Linuxcnc and add a double stepper, ballscrew, and limits.

Uff, so surely that's it, which would make me very embarrassed and make me feel really stupid

I learn that, I have realized that by speed and precision I should have gone to some servos directly, the truth is that the price difference is not so much. As first experience is being very instructive and enriching. I can only be very grateful, really.

Hello everyone.
Definitely the two Y ballscrews are very off center. Since the solution involves manufacturing new parts with basic tools and the difficulty that entails, I am considering making the union between motor and ballscrew by means of pulley and belt, even leaving aside the ballscrews at the moment and making the transmission with shapeoko type belt . I found a page in the UK that supplies pulleys and T5 belts, would they be valid for a hundredths precision? What other solutions do you advise me? I am open to all kinds of ideas and information.
Thank you.

Understood.
Yes, I have seen many machines of the type that you say but I would be doing everything again, so I will have to do and do what I have as you say. Thank you very much for your opinion and help, it is very valuable for me.

I said about joining stepper and ballscrew by pulley and belt because and observed that all the machines at work are built like this and it has always caught my attention and now that I am having all these problems I think I understand why, it offers flexibility since you don't have to perfectly align the stepper and ballscrew centers and I suppose that it has the advantage of offering greater precision of the ballscrew by means of the pulley relation and avoiding microstepping and the loss of Torque that entails it, I don't know if I'm right.