Customizable Crystal Unit Cells - Labeled Models (NaCl, CsCl, FCC Copper, BCC Iron, HCP Magnesium)
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5 labeled crystal unit cells: NaCl, CsCl, FCC copper, BCC iron, HCP magnesium - customizable
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- Creative Commons — Attribution — Noncommercial
5 labeled crystal unit cell models - classic ionic salts and the three metal packing structures every materials science course covers.
Every atom is a sphere in standard CPK colors with its element symbol plus proton and neutron counts printed right ON the sphere (e.g. C P-6 N-6), and every bond is a separate stick. Built natively in TrueGeometry Playground - no booleans, overlapping shells only, so slicers merge the parts cleanly.
CUSTOMIZABLE: each model is generated from a Playground script with $ATOM (atom size), $BONDR (stick radius) and $BONDL (bond length) as Live Parameters - tick Auto-Run and drag the sliders to restyle the model before exporting your own STL. Full TrueGeometry Playground commands: in the blog article https://blog.truegeometry.com/0_0_0_0/blogs/post-0cce285f.html and the attached recipe files. Playground: https://www.truegeometry.com/CoreWebGLTG/KBEAgentHTTP.html
Included models: NaCl (rock salt), CsCl, FCC copper, BCC iron, HCP magnesium.
Printing: these are display/education models - the atoms and sticks overlap by design (no unions), so slice with "merge overlapping volumes" / default settings. Small labels may need a 0.2 mm nozzle or scaling up for crisp text. Not yet test-printed by us - if you print one, please post a Make and help the community!
STL files are native Playground exports (no external mesh edits).
License: CC BY-NC 4.0. Free for students and teachers to print and use in class. Commercial use requires TrueGeometry's consent - contact us via TrueGeometry.com.
Blog article with full instructions and all commands: https://blog.truegeometry.com/0_0_0_0/blogs/post-0cce285f.html