Medium Funnel for Gravitrax (Optimized)

I have optimized the design such that there is less visible layer lines when printing with 0.08mm layer height. Also, I have changed the groove design because the groove on the original is extruded at 3.299mm, while the optimized design's groove is extruded at just 2mm. Because of the redesigned custom groove, I have designed a custom ring that fits perfectly with the main part.