Bottle Transfer Couplers

thingiverse

Are you thrifty? Do you hate wasting the last little bit of soap or shampoo stuck in the bottom of a bottle? Are you looking for a simple and straightforward way to pour the old bottle into the new one without making a big mess? Are your arms tired from standing around in your comfortable but slightly worn bathrobe holding two bottles together for 15 minutes while the dregs of one flow into the other? Oh boy, have I got something for you! As do about thirty other clever designers who got as frustrated as I did and created something to make their lives easier, and shared it on Thingiverse. So, there's that. After looking around, I didn't find precisely what I was looking for off the Thingiverse shelf, so I sat down and quickly came up with something from scratch. As seems to be a theme with my other designs, this is the "Goldilocks" version of what I wanted, but couldn't find in one place elsewhere. **KISS: K**eep **I**t **S**imple, **S**tupid: * **Versatile:** No threads, these are smooth-sided cylinders that will work just fine as long as your bottle neck is the same size or slightly smaller than the opening. * **Tidy:** There is a funnel in the middle that will keep the laws of fluid dynamics from making a mess on your counter top by ensuring no liquid can make its way to the edge of the bottle being drained into. * **Sturdy:** Can be tossed into that utility drawer and have other stuff piled on top without breaking. I made four different sizes to fit the most common bottles I personally encounter. Sizes below are the I.D. of the coupler, so just take your handy caliper (I know you have one) and measure the O.D. of the bottle neck including the threads to find your match. * **25mm:** Hand soap pump bottles and similar. * **28mm:** Dish detergent and normal "mortal" sized bottles of shampoo and conditioner. * **32.5mm:** Jumbo bulk-club sized pump bottles of shampoo and conditioner. * **32.5mm to 37.75mm adapter:** This is an oddball made for draining the dregs of conditioner from a jumbo pump bottle into a smaller bottle with a wider mouth. Print, use, enjoy, then marvel at your newfound quality of life.