Necks and Caps

by xavan, published

Necks and Caps by xavan Jul 1, 2016
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Necks and Caps by xavan is licensed under the Creative Commons - Attribution license.

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The “NeckCaps” file (openscad) allows to design your own necks/caps for your DIY projects.
Examples are given for three widespread closures of PET bottles:
• 28 mm pco 1810 (pitch 3.18 mm, old std) – (used for water/soda bottles)
• 28 mm pco 1881 (pitch 2.7 mm, new std) – (used for water/soda bottles)
• 38 mm 3 start – (used for fruit juice bottles, flat beverages)
So you can make your own containers/bottles with these necks and use regular HDPE caps from your water/soda bottles.
You can use the caps in many different DIY bottle projects such as: bottle connectors, pet water dispensers , plant watering . . .

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That's exactly what I'm looking for. many thanks for your work.
interesting topic these standards :)
What software did you use for this?

I use Openscad (file available for download).

I missed the cap with hole ( and carabiner) in the files!?

I designed this thing 1 year ago. Sorry I did not keep the stl file of the cap with the hole.