Simple funnel with paper filter in it cause very low flow because the filter is attached to the sides. I need it to get purified water from clothes dryer. So I designed this high flow funnel for (paper) filters.

Print it vase mode (without bottom). Use higher width (e.g. 1.2 mm for 0.4 mm nozzle). You can use any material. Even PLA will be flexible a little due to the shape.