Washer funnel

The neck for filling the washer is a problematic part of almost any car. The proposed funnel is designed to somehow make life easier for the motorist in this matter. A 0.5m x 8mm silicone tube was used as a siphon. I bought it at a local household store.
Voronka.stl - for single-start threads (4 mm pitch) of canisters in which washer is usually sold.
D1 = 38 ;//outer throat diameter
Voronka2.stl - for three-way thread (pitch 3 mm) of 5 liters of plastic bottles made of water.
D1 = 36.5 ;//outer throat diameter