Can you explain just one "shift" during printing ?

[Boris]

Hello guys.
I've got smooth and flat kinda curved wall object.
Big model length of 30cm and 14cm high,11 hours printing.

There is NO issues with .stl or g-code. I've tested it in Repetier and Simplify3D g-code preview.

But there is issue during print
At the middle of printing every layers just SHIFTed or something like that by ~1mm.

There is result on a picture.
How ?
Why it's happened ?
How to prevent this in future ?

[venkel]

Hi Boris,

issue solved? I had it with the Y-axis today. A shift by 30mm... pretty bad.

Michiel

[Hugues]

same here with Feix 3.1 this week-end, shift of about 5 mm in one axis only, no apparent reason.

[3Diy]

I had exactly the same issue with my first larger print. After 4 Hours i´ve got a ~1 Cm shift in Y direction for no reason. The gcode is o.k.

However I assume, that the there is an issue with the stepper. Maybe it was to hot and skipped a Step?

has anyone a solution for this problem?

[Sven_Felix]

Dear 3DIY,

Fortunately this problem should be easy to fix.

1. First check if the driving belt is tensioned correctly so the belt can't slip over the pulley.
2. The stepper drivers are over-current and over-temperature protected. When the current is set just a bit to high it can happen that the driver get to hot, even after 4 hours and will shut off for a short time. This results in layer shift.

Please check step 89 in assembly manual. Locate the potentiometer for your faulty axis (STPX/Y/Z) and turn it anticlockwise just a little for lowering the current.

Good luck!

http://www.felixprinters.com/downloads/ ... IX_3.1.pdf