Customizable Ball-and-Socket Joint Model - Working Teaching Model
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Working ball-and-socket joint (hip-type). Ball lifts out to show both surfaces. Parametric.
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Model information
- Source
- Printables
- Category
- Chemistry & Biology
- License
- Creative Commons — Attribution — Noncommercial
WORKING SYNOVIAL JOINT MODEL - BALL-AND-SOCKET (like the hip)
Customizable parametric teaching model - sizes and clearances are sliders in TrueGeometry Playground (free, in the browser).
A ball rotates freely inside an open cup, like your thigh bone in your hip. Lift the ball out by its stem to see both surfaces.
This is one of six models in the Synovial Joint Teaching Set (hinge, ball-and-socket, pivot, saddle, plane, ellipsoid) - collect the full set for the classroom.
SIMPLIFIED TEACHING MODEL - not anatomically exact. For education and demonstration only. Not a medical device, and no medical claims are made.
WHAT YOU GET
Full assembly STL (all parts in place, print-in-place)- The complete TrueGeometry Playground recipe (customize sizes, $GAP clearance)
How-to-run-scripts guide (PDF)
PRINT NOTES
No supports needed. The ball prints in place inside the cup with $GAP clearance (default 0.4 mm) - tune $GAP for your printer; increase it if the ball fuses.
The bowl is a single boolean subtract (noted in the recipe); other overlaps are intentional and the slicer merges them.
PLA works well.
HONEST STATUS
Designed in TrueGeometry Playground, not yet test-printed by us - please post a Make if you print it. AI-assisted design.
The full recipe (every command, ready to paste) is attached in Other files, and the included guide PDF shows how to run and customize it step by step.
Customize it in TrueGeometry Playground: https://www.truegeometry.com/CoreWebGLTG/KBEAgentHTTP.html
License: CC BY-NC 4.0 - free for students and teachers to print and share. Commercial use requires TrueGeometry's consent.
Read the full build + customization guide: https://blog.truegeometry.com/0_0_0_0/blogs/post-68a70c6d.html