3D printer wobbling solved - mechanical improvement Geeetech prusa i3 mk8, Anet A8

I just bought a cheapest 3d printer from ebay and soon exposed shortcomings.\r
One of the first problems which we are all facing with is wobbling.\r
I saw some shortcuts with printed inserts for nut, but i didnt like it.\r
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So i make new coupling new threading rod and make a few more trick, but everything youll see in the video.\r
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music by audionautix.com\r
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Alison, Hope Against Hope, Crushin