Mentos-Diet Coke Spray Head

thingiverse

The spray head is designed for holding Mentos and dropping them into a Diet Coke bottle. It's based on LT1Pat's work on pop bottle threads, modified for Emaker compatibility with an integral design and steep internal slopes for printability without support. Recent updates center the jet and add material to the threaded area. Print at 100% fill; beware of leaks due to filament diameter/retract issues. Test no extra shells versus 2 extra shells for thread quality. A poorly printed thread still works fine, just scrape off excess strings. To use, tie a string to a straightened paperclip loop, drop in Mentos, insert the paperclip, and screw onto the Diet Coke bottle before pulling out the clip.