Cup holder insert for narrow cans
Slim 250 ml energy cans and small coffee cups rattle in a standard 80 mm car cup holder and tip on corners. An insert fills the gap with an outer cup of 79 mm diameter tapering to 70 mm at the base, an inner bore of 55 mm, walls of 2 mm, a 4 mm flange on top to lift it out, and drainage slots in the bottom. Two shallow finger notches make removal easy, and PETG or ASA hold up to a hot dashboard.
Car cup holders range from 70 to 95 mm wide, and SpeakCAD sizes the insert to your measured holder and the exact can you drink from, then lets you add a phone slot or a coin tray in the chat. Try it in the browser free and download only when it fits.
Design a cup holder insert 79 mm outer diameter at the top tapering to 70 mm at the base, 80 mm tall, 2 mm walls, a 55 mm inner bore, a 4 mm top flange, two 15 mm finger notches, and three 6 mm drain holes in the floor.