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At some height printing starts to shift

Posted by Bratan 
At some height printing starts to shift
January 30, 2015 04:54PM
I have Prusa i3 Rework (kit from Replikeo).
I've been trying to print Wade Small Gear, and this strange problem appeared that ruined every gear print. At specific height parts of the print begin to shift in what looks like Z and Y axes. It happens in exactly same spot on every print. I'm guessing it's physical problem, but I have no idea where it might be. So I would like some help...
I'm attaching pictures of what it looks like... Problem area is towards front of the printer and little to the right.
I'm using white ABS 1.75mm filament at 225C
Repetier host and firmware.

Edit: I just printed gear on the opposite (far) side of the bed, and it came out just fine... I still have no idea what's going on...

Edited 1 time(s). Last edit at 01/30/2015 06:23PM by Bratan.
open | download - IMG_3490.jpg (85.9 KB)
open | download - IMG_3491.jpg (123.6 KB)
open | download - IMG_3492.jpg (68.8 KB)
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