The filter paper shaper is 3D printed with PLA to match an OREA fast-flow paper filter. If you press the negotiator inside, the filter could allow faster flow and lower bypass as it sticks to the walls of the brewer.
Solution
Step 1: The dosing funnel 3D model could be found via Thingiverse. It’s also inspired by others’ designs and built with Fusion 360.
Step 2: Adjust the position of the 3D model to reduce using of supports. Here we print the part with FDM PolyMax PETG as it’s safer than PLA.
Step 3: Take the print from the plane. Adding a raft or skirt would make this process easier.
Step 4: Polish the print manually with a grater and sandpaper to remove the remaining marks.