It is recommended to use PETG or ASA materials for printing.
The wall thickness should be at least 4–5 layers, and it is recommended to use a high filling density

Hardware configuration:
4 M3 hexagonal countersunk screws
4 M3 nuts

The inside of the "Top" and "Handle" components needs to be equipped with a support structure. Since a 1mm gap is reserved here, the excess support material will not affect the movement of other components. However, I still recommend using PVA as the bonding interface for the support material.

The "top" component can be painted using color spray paint or other equivalent methods.
 

Applicable scenarios:
 

"Spring Top" with built-in spring installation holes:

Aperture: 6mm // Spring length: 16mm

The nut is installed by press-fitting, but if the tolerance of your printer is not accurate enough, you may need to use heat curing to ensure its stability.