About this 3D model

Here is an alternative to the two parts coupler. I had a Z axis problem, it was wobbling. I used to have a two parts coupler. When I tightened it, the threads of the Z axis gripped more in one of the two parts, so it was off. This part is easy to print and simple. It should improve the Z axis wobbling problem. Hardware required: 2 M3 nuts 2 M3 set screw 2 M8 Nuts