Converting bottle threads from diagram to a 3D model

Question

Goal:

I'm trying to model the threads of a polar springs 500ml bottle in Blender 2.8x so I can 3D print an adapter for it.

Issue:

I'm having issues converting what Blender 2.8x calls Screw and what the diagram calls Helix Angle and Travel Per Turn.

Full diagram of threads I'm following

I've been able to find some good dimensions for the threads to start with. Link to full diagram below. https://www.bevtech.org/assets/Threadspecs/2072573_tmp.pdf

Tried:

I was thinking of using the profile of a 3 edge plane See image below

And using the screw modifier to make each of the 3 threads (each of the 3 threads only go around 73-75% of the bottle head) see image below (I was doing it this way to have more control over each thread since 3D printing this may require fine tuning each thread)

To test the treads I would just use a cap that comes with the 500ml Poland springs water bottle.

Ps: I was following parts of this tutorial https://youtu.be/kVNxfCtoG_A

score 2 · Accepted Answer · answered Aug 06 '20 at 11:42

2

Such a nice diagram almost calls for the Simple Deform Modifier :)

Model the thread as in the diagram
Add a Simple Deform Modifier > Bend
Choose an axis and set angle to 360°

answered Aug 06 '20 at 11:42

jachym michal

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Wow! How / what technique did you use to model that? – Rick T Aug 06 '20 at 11:53
It's just a subdivided plane with projected threads. I'll describe the process in detail if you ask it as a new question :). – jachym michal Aug 06 '20 at 12:17
1

Thanks, I just made another question. https://blender.stackexchange.com/questions/190092/creating-a-subdivided-plane-using-projected-threads – Rick T Aug 06 '20 at 12:40
what technique did you use to extrude the threads? – Rick T Aug 08 '20 at 11:03
1

Hello :). Blender has an Extrude Tool for this. First, I extruded all faces to give the plane thickness, then I extruded only the threads. – jachym michal Aug 08 '20 at 11:15

Converting bottle threads from diagram to a 3D model

Goal:

Issue:

Full diagram of threads I'm following

Tried:

1 Answers1

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