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3D printable bottle and screw cap

by CreativeTools, published

3D printable bottle and screw cap by CreativeTools Mar 25, 2013

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Description

A small bottle and screw cap that you can print on your 3D printer.

Recent Comments

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Sure :)

The wall-thickness of the bottle sides is 1 mm.
Love this! Can you tell me what the thickness of the bottles wall is?
Sound great that you 3D-printed the bottle and screw cap successfully. :)

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Love this! Can you tell me what the thickness of the bottles wall is?
Sure :)

The wall-thickness of the bottle sides is 1 mm.
Do you print the bottle and the cap at the same time?
Normally we 3D-print one bottle and one screw cap together at the same time on the plate. The main image you see with the green and yellow bottles with corresponding caps, are printed separately and then we interchanged the parts to show that they fit together well.
Thanks. I wasn't sure if there would be issues with the layers separating (due to the plastic drying on the bottle while the extruder is over working on the cap). But I went ahead and tried it anyway and it worked out perfectly when printed at the same time. Thank you!
Sound great that you 3D-printed the bottle and screw cap successfully. :)
Note: food safety issue... the rough surface texture of filament printed parts/pieces are a nice breeding ground for bacteria. Just an FYI. And since you can't really steam sterilize the item, it poses a problem.
Good point. You'd only want to use this bottle to store dry, solid things, not liquids or powders.
There is now a 150 mm tall version of the bottle available for download.

- (video) plus.google.com/115061138102705881697/posts/KxoANa7uJGY
Why is it left hand threads? dislike..
Hi,

Don't really understand your comment. This bottle screws on it's lid in the same manner as 99.9% of all soda bottles out there on the market. You can even use soda bottle screw caps on this bottle and vice-versa. Please clarify your statement so that we can understand better why you dislike the threads on this bottle.
Hmm I wonder if it my printer software maybe. because mine has "left hand threads" or AKA lefty tighty instead of righty tighty
Thanks for your reply and explanation. An accidental mirroring of the part in the 3D print software is for sure a possible reason. We never thought of that. :)
looks great, i just started a forum if you guys can check it out The3Dconnection.com thanks
Nice work. I´m trying to understand how many pieces of anything can i do with a PLA or ABS kilo. Looks like a kilo: 1000cm3. So, if this is right, allmost 50 bottles can be printed with a singe roll. Isn´t?. Thnx
Not quite. ABS's density is about 1.04 g/cm^3 and PLA's density is 1.24 g/cm^3. This means that 1 kg ABS = 961.5 cm^3 so that's 46 in ABS; 1 kg PLA = 806.5 cm^3 which is 39 in PLA. These densities are average, so some plastics are denser, and some less so, but on average these should be a good estimate.
very nice project!
Can you share the .3dm? It will be cool to modify your bottle!
thx
I wanted to thank you for this design. I am not making the bottle but rather made the cap larger to fit the gallon jugs I get epoxy in. I then made a spout sticking out the end along with a cap to cover it.

I have a hard time with this epoxy filling smaller bottles. Pumps don't work well as the epoxy is thick, pouring from the jug inevitably ends in spills. Nobody makes a high volume spout for these.

I thought it would be a long shot that just scaling this up would fit (thread pitch and all) but after a few tries it fit perfectly. It was almost airtight without modification but I am taking a few extra steps to make it airtight. It's tight enough now that I don't think the epoxy would leak out.
I take it this is PLA, since you show a Rep 2 in the background. That's a nice matte finish for PLA. Did you do anything special to get it that way?
Where did you find or how did you get the screw thread definition? I'm looking
for a standard for commercially available bottle screw threads.
We didn't find any standard and just cut a normal soda bottle cap in two and took measures with a calliper. Then we reverse engineered it in Rhino 3D.
I think there is a standard: PCO28. ww3.cad.de/foren/ubb/uploads/Clayton/Brenkyle_tec_data.pdf
I don't know though if this is global or used only in Europe

I used this standard to design thingiverse.com/thing:73852, which fits regular softdrink plastic bottles
PET-Kanne
by damm301
I think there is a standard: PCO28. ww3.cad.de/foren/ubb/uploads/Clayton/Brenkyle_tec_data.pdf
I don't know though if this is global or used only in Europe

I used this standard to design thingiverse.com/thing:73852, which fits regular softdrink plastic bottles
PET-Kanne
by damm301
This is great information! Thanks for sharing it :)
This is great information! Thanks for sharing it :)
what settings did you use to print?
For the bottle in this image we used the standard medium setting in MakerWare. No changes made to the normal values it has.
Is the plastic food-grade?
ABS is not food grade, PLA can be (depending on how it's handled and what's added to the PLA for color, etc.). Nylon (Taulman) is medical grade, so should be fine for food.

Insert caveat: if your printer and nozzle aren't clean, YMMV.
You can add Epoxy spray and wait it to cure, the same process is made with aluminium cans. (Aluminium is highly toxic) but with Epoxy gets super food grade.
Cool. What kind of epoxy spray would that be?
I have read a lot about this and my opinion is that while PLA isn't poisonous (but who knows what dyes are used in various colors), objects printed with FDM could never be sold as food safe. The process of melting and extruding the plastic through the nozzle creates microscopic bubbles and voids on the surface which could trap bacteria in a way that you could never get it truly clean. That being said, if you're just using it for water, I wouldn't worry about it. If you're being really strict, as soon as a plastic cutting board has scratches in it it's not "technically" food safe anymore. Just about everyone uses their plastic cutting boards for years without dying. In the end, I would say it is safe enough to use, but it's not as safe as a water bottle you would buy at a store. I wouldn't recommend storing milk in it.
boiling water is hot enough to kill most bacteria, so it would stand to reason that pla at almost 200 deg C should have killed them twice over....

my main concern is for small holes in the plastic which can give access to the inner layers and allow dirt and bacteria to get trapped there, but not really worried about this happening during the printing process but rather after the first use...
boiling water is hot enough to kill most bacteria, so it would stand to reason that pla at almost 200 deg C should have killed them twice over....

my main concern is for small holes in the plastic which can give access to the inner layers and allow dirt and bacteria to get trapped there, but not really worried about this happening during the printing process but rather after the first use...
Nice, design. Is the seal water tight when you screw it on?
You can add the plastic that is inside a comercial cup. That will provide the seal you need.
You cant as there is about 4mm space, between the lip of the bottle and the roof of the inside cap. the rim of bottle should be next to the lid. Thes seal then does the rest.
I am going to fill that space in mine with epoxy. Will make a nice firm flat seal.
Thanks :)
It is quite water tight on the surface but as with most FDM/FFF prints it leaks somewhat. That should be easy to solve just by coating the inside with some resin.

Regarding the screw cap, it can be made easily water tight by putting a rubber membrane or washer.
Please can you reduce the top height space of the lid, so when the lid is screwed on the top lip of the bottles touches the inside top roof of the lid. As water leaks over the bottle lip and then out the outside thread. If you could allow for two versions - tight top (lid against the bottle lip and a 1mm version allows for a insert to coke type rubber washer.
I just put about 10mm of acetone and swished it around inside it, now mine is water tight. Thanks for a great design!
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