From the design point of view, the appearance position, insertion position and workpiece matching position all have high precision requirements:

Usually, the appearance should be designed on the edges and corners, even if it is misaligned by 0.02, put two decimal places.

The insertion position is more important, generally the interference is 0.005mm, and the interference is afraid of treatment. Of course, if the machining accuracy is high enough, you can also put a gap.

Generally, the working position of the workpiece is minus 0.0 1.

Pay attention to the slider part, which is generally +0.04/+0.02, otherwise it will get stuck.