Start by 3D printing both parts of the Eufy X9 Pro replacement Pre-Filter, laying them flat on the print bed. Ensure a layer height of 0.2mm for optimal results, and avoid using support material.

The holes in the design have a 2mm diameter, allowing you to insert a piece of filament to secure them.

Once the parts are printed, acquire a pantyhose to use as the filter material. Stretch it over the first part (part 1) of the filter.

Place the second part (part 2) on top, aligning the holes. Insert a piece of filament through one of the aligned holes. Cut it approximately 1 to 2 mm above the hole.

Repeat this process for all holes, trimming the filaments closer to the surface once all are in place.

To secure the filter, use a soldering iron or a clamp to flatten the protruding filaments, effectively sealing the assembly.

Follow these steps to create a functional and easily replaceable filter for your Eufy X9 Pro, offering a DIY solution to your filtration needs.

* Additionally, note that there is a slot in the design where you can insert either the original rubber seal, a piece of TPU, or an elastic band. It is crucial to have something compressible in this slot.

This additional feature ensures proper sealing and allows for flexibility in choosing the sealing material based on availability and preference. Ensure that whatever is inserted into the slot can be compressed to create an effective seal for the Eufy X9 Pro replacement Pre-Filter.