Eye Wash Bottle for safety and emergency

thingiverse

I'm eager to conduct some chemistry experiments. To ensure my safety: I will wear protective goggles at all times. In case of an accident, I'll have water on hand to wash out my eyes immediately. To print this design, I need to add a 8mm outer diameter hose to it. Before assembly, I must clean each plastic piece carefully to avoid any contamination. It's crucial that no water moves into my eyes, as it can cause harm. Next, I'll prepare the solution: boil 0.5 liters of water, let it cool down, and then add 4g of salt (NaCl). I must mix everything carefully to avoid creating a mess. To store this mixture safely, I'll use a clean bottle. This water solution will last for only three days, so I need to have a fresh supply on hand. Before using the bottles, I must make sure they're all spotless. If I accidentally get any chemicals in my eyes, it's crucial that I don't rub them or try to flush out the bacteria with this mixture. Since different bottles may have varying thread sizes, I've designed two specific bottle types for this experiment. Brown plastic bottles work best for me, as they're easy to grip and won't break easily. On the other hand, glass bottles aren't ideal because they require too much force to squeeze them shut. The threads.scad file is a direct copy from thingiverse.com, specifically from this design: https://www.thingiverse.com/thing:1938150