TPU 90A Dropper Bottle for Paint and Other Liquids

Brief fun story: I bought some paint from a certain miniature paint brand (which I will not name, you know who you are) that, to my surprise, makes awful dropper bottles. Why so bad, you might ask? Well, because the nozzle isn't threaded nor joined to the bottle itself. Is by any chance the nozzle even a bit clogged? Did the shaker ball obstruct it slightly? Great, now your paint bottle has exploded and the expensive liquid is on your work bench. And walls. And you, very likely. 

 

"Skill issue", I hear you say. Perchance. Still, I'm definitely petty enough to make my own bottle with a THREADED nozzle to solve the issue!

 

The bottle contains around 15 ml, is made from TPU 90A and is tested as waterproof. It has now contained paint for one and a half months in the torrid heatwaves and it is still perfectly liquid with no measurable evaporation. The threaded nozzle allows you to fill the bottle at your convenience, and even drop in shaker spheres if you want. 

 

Printing Tips

 

Especially for the dropper body in TPU, print it slow, and absolutely dry your filament. I can't stress this enough, the small bubbles left by moisture will definitely give you issues with transpiration and leaks. You don't need fancy driers, just use the printer bed. 

 

The bottle works great in TPU 90A. I haven't tried other TPUs, but I'm fairly confident that 85A and 95A will work well. I did a test with AMS TPU which didn't go very well because layer adhesion was awful. The bottle doesn't necessarily have to be flexible, some paint will get out anyway when you turn it upside down, but use rigid filaments at your own risk.

 

The nozzle insert and cap work great in PLA. 

 

If you like my work, consider boosting and checking out my profile. If you want to produce and sell the bottle, consider joining as a member!

 

Boost MeBoost for bottles that work :)MembershipBecome a member to sell this product!