Ender 3 Z-axis Stabilizer

thingiverse

I'm not entirely sure if this step is crucial, but it's worth checking nonetheless. You should verify that your print head can travel all the way up before printing, as there might be slight discrepancies in the distance between the Z axis and the aluminum frame. V2 - The gap between the Z axis and the aluminum frame has been adjusted, making the hole larger to account for lower print precision.