Gap test fish

1. This is an 3mf file for testing the accuracy of the gap, which contains 4 kinds of movable structures that are often used in my design.2. Try printing this file before printing my other works to adjust the gcode settings. When confirming that all 4 parts can be rotated, print my other works with the same settings, which can increase the printing success rate.3. Try controling the gap of movable parts by adjusting the flow rate.4. If the flow rate drops below 90 and the result still fails, it