A1 mini Z-axis stop block fix

If you use an electric screwdriver to tighten the stop block screws, you may damage the stop block. To prevent this situation from happening or to try to make up for the stop block that has been screwed. This file can be downloaded and placed between the z-column and stop block.如果你使用一个电动螺丝刀拧z轴上盖的螺丝，你可能会损坏z轴上盖。为防止该情形发生或者试图弥补已经被拧坏的z轴上盖。可下载此文件，并将其置于z轴铝柱和z轴上盖之间。这能为您省出15元！