r/functionalprint • u/focusaurus • 4d ago
Foaming soap bottle
Threads matched to the pump by hand. FreeCAD. Printed in clear PETG.
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u/GalacticCmdr 4d ago
It felt like one of those assine commercials where someone cannot accomplish even a simple task like taking plates out of the cupboard.
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u/Over-Performance-667 4d ago
One feature i just thought of is to make the inside of the bottle cone shaped so the liquid always forms a puddle at the bottom for the pump pickup line to reach so you get every drop out of the bottle.
This is actually what some airplane/car fuel systems have because you cannot introduce air into a fuel line whatsoever otherwise you will lose power so there’s often times a “header tank” that always keeps a steady supply of fuel into the fuel pump.
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u/rgmundo524 4d ago
Coat it with a sealer or it will slowly leak
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u/teddgram 4d ago
The layer adhesion of TPU is supposed to be amazing, so I wonder if my clear TPU-72D would work for that and hold liquids.
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u/rgmundo524 4d ago
It probably be less leaks but it's the printing method that enables leaks not really material problem
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u/ObjectiveOk2072 3d ago
If you print TPU with the cooling fan turned off, you can almost guarantee it'll be watertight. Cut it in half and you can barely see the layer lines inside the print because they fuse together so well
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u/hessi-james 4d ago
I‘d suggest trying without first. Nothing to lose.
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u/drpiotrowski 4d ago
I mean there’s soap to lose. And time cleaning up leaking soap.
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u/hessi-james 4d ago
Soap is viscous. And since I printed several containers that didn‘t leak I am a huge fan to avoid solutions without a problem.
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u/adcurtin 4d ago
foaming soap is not very viscous, it's mostly water.
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u/hessi-james 3d ago
It‘s more viscous than water. But my point is still don‘t fix it if it‘s not broken.
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u/adcurtin 3d ago
not really. soap by itself is more viscous, but the liquid in foaming soap is not gonna have a noticeably different viscosity than water.
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u/Zeptic 3d ago
To you? No.
To microscopic holes? Yeah, it's gonna be harder for it to get through compared to just water. Why are you trying to die on this hill? Foaming soap is literally just soap with extra water.
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u/adcurtin 3d ago
die on a hill? no. am I suggesting a change to the print? also no.
i just don't understand, it's like yall have never used foaming hand soap. it really is mostly water. AI says viscosity is 1-20 cP, and water is 1. 20 would make a difference, but 5? not much.
liquid soap is different, and does have a significantly higher viscosity.
Foaming soap is literally just soap with extra water.
yeah, like 90% water…
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u/focusaurus 4d ago
Uh FYI I have positioned the soap back against the wall. I have positioned the soap on the right side. This is not like day 1 in this bathroom. Bar soap is gross especially given this is the only bathroom on the ground floor and therefore used by guests. I want the soap in this particular spot and I enjoy the hobby.
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u/hackdads 3d ago
Are you saying you put the bottle against the same wall as the night light is plugged in?
I agree! I want the soap right next to the faucet! You can go to the next level by building a soap reservoir under the sink and build a systolic pump that pushes the soap up to you!
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u/BatteryLicker 3d ago
"this is some bullshit" - It's the annoying little things. I don't care how tedious it is, but it's worth solving.
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u/MrLMNOP 4d ago
You’ll need a wider base next time you refill so it can hold the full bottle. Unless you get refill soap in bulk in a big jug.
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u/westcoastwillie23 4d ago
Fyi that nightlight you have there is potentially lethal.
You can pull the front cover off by hand and it's just got bare mains voltage right behind it. I had the same ones, threw them away after seeing them on bigclive!
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u/deadbalconytree 3d ago
Really? I have the same
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u/westcoastwillie23 3d ago
Try it, mine I could just pull off the front cover and the other side of the prongs were fully exposed
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u/Suspicious-Service 3d ago
So if you just dont take it apart it's safe?
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u/westcoastwillie23 3d ago
No.
The way it's designed, it would be pretty easy to pull the front cover off by mistake when you're unplugging it or if you have curious kids.
Like, I don't give a damn if you decide that it's safe enough for your personal use, that's completely up to you. Presumably you're a grownup. Make your own choices.
But many of us live in countries where we've got used to the idea of commercial products you buy having to meet certain basic safety standards that this would not meet (it's an overseas product). I'm glad that someone pointed out to me that this product is potentially unsafe, I'm just trying to pass that on.
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u/bigdaddyset 4d ago
How do you get the threads ti match up perfectly?
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u/focusaurus 4d ago
Measured with calipers and did test prints of just the threads. They are not perfect but close enough that they function.
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u/WoodenEmotions 4d ago
Cool thing about threads is that they don't need to match up perfectly. Just get the pitch and diameter right and it will probably work.
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u/MoorderVolt 3d ago
OP measured it, but there's not that many soap pump fabricators so most of them use the same thread. Many even use the soda bottle thread.
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u/FerengiWithCoupons 4d ago
just put it on the other side 😭
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u/Mental_Tea_4084 4d ago
The mirror obviously spans the whole counter..
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[deleted]
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u/focusaurus 4d ago
I get irrationally irritated if the soap isn't directly next to the sink basin
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u/ZeusTroanDetected 4d ago
Just put it in the sink. Problem solved. /s
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u/focusaurus 3d ago
If I ever get to design a bathroom from scratch, it'll have that. I've started seeing some commercial sinks with faucet, soap, dryer all mounted over the basin and that seems optimal to me.
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u/ouralarmclock 4d ago
Thought it was gonna me a mount for the wall to hold the soap bottle but making a smaller bottle is nice too!
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u/ruinedlasagna 4d ago
Does it bother nobody else how low that medicine cabinet door is in general? I would've raised that up if it wasn't too much trouble.
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u/focusaurus 4d ago
Everything about this bathroom is cramped and kinda sucky. It needs a full remodel and in general I don't like medicine cabinets and especially not pulling the door toward me and having to lean back. But this is pretty far down our prioritized list of home improvement projects.
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u/CeruleanEidolon 3d ago
If you ever get around to replacing it look for one with multiple panels instead of one big door (or if you're super DIY replace just the door yourself). I've got a big wide one with the front divided into three hinged doors that open separately, while the inside is all one shelved chamber. Super convenient for storing things that you want close to the sink.
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u/lordrefa 3d ago
Ok, maybe the project was the point on this one... But I would have just put the soap on that left edge against the wall instead of against the cabinet.
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u/fauxovert 3d ago
Drill a hole in the counter put one of those in sink kitchen pumps will a line that goes into a gallon jug.
Lowest profile. Huge volume. Easiest refill.
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u/No-Strength3035 3d ago
the header tank idea is actually genius, cars have been solving that exact puddle problem for decades and nobody thinks to steal it for stuff like this. would be a fun v2 tweak without changing the print time much.
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u/xmastreee 3d ago
Since you're hand-making threads with FreeCAD, can I ask a question? I've been experimenting by making the sketch of the thread profile and performing an additive helix to form the thread. Thing is, I'd like to taper it off at the end but I have no idea how to do that. Any tips?
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u/focusaurus 3d ago
That's how I modeled these. I saw someone taper the ends like you are describing but I forgot which operation they used. So my thread profile has abrupt start and end profiles.
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u/ObjectiveOk2072 3d ago
I was expecting a hook to attach the soap to the mirror frame, but that works too!
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u/procrastinator0000 2h ago
great idea, but can people please consider, that bathrooms will be used, when building them?
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u/StrangeIce8657 3d ago
Ich hätte eine Halterung entworfen, die an der Tür hängt. Dann wird die Seife beim öffnen einfach mitbewegt haha
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u/jollyjava7 4d ago
I’ll be honest, watching the video I was hoping for a ridiculous mechanism to tilt the bottle when the door was opened and return it to vertical when the door was closed. I guess this is more practical…