error/difference between x and y axis in delta 3d printer

[t_man]

Hello friends

I have a problem on my delta 3d printer

Between x and y axis when im printing for example a cube 10 mm or 20 mm (print on repetier)

One corner can be 19.8 mm and the other corner can be

19.3 mm...

So every shap i print is not symmetrical.

In about 0.5 mm micron difference

I try to play with the diagonal radius but it change both x and y dimensions and not only one of them.

So what can i do to solve this problem ?

Thank you all...

[t_man]

In addition:


First of all I stretched the belt - and it did not solve the problem.

I downloaded the hotend to 0,0,0 and measured distances to each tower.

With a ruler the distances were relatively equal.

But I printed isosceles triangle (square 15 mm ) and measured the height side of it (as the distance from the tower. )

The picture from top :

[img]https://lh4.googleusercontent.com/-uNGk ... ringle.png[/img]

I found only point tower Y is smaller than X and Z.

What to do? How to solve it? Maybe change the stepper mm Y axis only solve it?

If so how can i change it?