{"id":72262,"key":"OpenSCAD_Crystal_Structure_Project","title":"OpenSCAD Crystal Structure Project","latest":{"id":1235099,"timestamp":"2026-03-02T15:02:44Z"},"content_model":"wikitext","license":{"url":"https://www.appropedia.org/Appropedia:Copyrights","title":"CC-BY-SA-4.0"},"source":"{{L3999 notice}}\n\nCrystal structure models are used by material science professors to help explain how structure influences properties of various materials. Some models come in self assembly kits like the molymod line [https://www.sigmaaldrich.com/catalog/search?term=molymod&interface=All&N=0&mode=match%20partialmax&lang=fi&region=FI&focus=product] or molecular model company [https://web.archive.org/web/20200221030354/http://www.molecularmodelscompany.com:80/] that range 20-40 Euros, but more detailed models can run hundreds of Euros [https://www.3bscientific.com/crystal-models,pg_1479.html]. Some can even be thousands of euros - particularly for large scale or complex models. Ideally, anyone interested in material science could print these structures in any size or format for a few pennies.\n\n'''Your project: develop an OpenSCAD script to make a 3-D printable model of the crystal structure most relevant to your research: Due Date March 13, 2018'''\n\n== Steps ==\n\n# Choose structure useful for you, check on past attempts [https://www.yeggi.com/ http://www.yeggi.com/]\n# Look it up- lay out geometry\n# Make parametric SCAD model with [https://www.openscad.org/ OpenSCAD]\n# Differentiate atoms in some way (e.g. color)\n# Select part and wire model (e.g. straws, stir sticks, filament, etc.) or print solid with fasteners (e.g. snap fit)\n# Ensure reasonably flat base\n# Realistic sizing- e.g. use scaling – make sure atoms are appropriately scaled to one another\n# At least 1 unit cell\n# Register with a free account at NIH 3D Print Exchange https://3dprint.nih.gov/\n# Post SCAD and STL at NIH 3D Print Exchange https://3dprint.nih.gov/\n# Print Full Color Model at FabLab on FFF 3-D printers and bring to class (Tape your name-write your name on it)\n# Add a photo of your print with a link to your models in the gallery on the Appropedia assignment page below\n\n== Gallery of OpenSCAD Crystal Structures 2018 ==\n\n<gallery>\nFile:nacl-crystal.png|[https://3dprint.nih.gov/discover/3DPX-007865 NaCl Crystal]\nFile:Stishovite.jpg|[https://3dprint.nih.gov/discover/3dpx-008843 Stishovite Unit Cell]\nFile:Austenite.jpg|[https://3dprint.nih.gov/discover/3dpx-008845 Austenite]\nFile:Diamond-Xuerong.JPG|[https://3dprint.nih.gov/discover/3DPX-008848 Diamond]\nFile:Coffee_print2.jpg|[https://3dprint.nih.gov/discover/3dpx-008922 Caffeine]\nFile:CBN.jpg|[https://3dprint.nih.gov/discover/3dpx-008853 Cubic Boron Nitride (CBN)]\nFile:formaldehyde.jpg|[https://3dprint.nih.gov/discover/3dpx-008855 Formaldehyde]\nFile:NiCdO.jpg|[https://3dprint.nih.gov/discover/3DPX-008847 NiCdO]\nFile:C2H4.png|[https://3dprint.nih.gov/discover/3DPX-008858 C2H4]\nFile:Capsaicin.jpg|[https://3dprint.nih.gov/discover/3dpx-008860 Capsaicin C18H27NO3]\nFile:(C3H4O2)n.png|[https://3dprint.nih.gov/discover/3DPX-008859 Polylactic Acid monomer (C3H4O2)n]\nFile:Ice-crystal-structure-print.jpg|[https://3dprint.nih.gov/discover/3dpx-008854 ICE (H2O)]\nFile:Graphene.jpg|[https://3dprint.nih.gov/discover/3dpx-008901 Graphene]\n</gallery>\n\n== Gallery of OpenSCAD Crystal Structures 2017 ==\n\n<gallery>\nFile:TMA-fig.jpg|[https://3dprint.nih.gov/discover/3dpx-008090 Trimethylaluminum]\nFile:H2O crystal structure.jpg|[https://3dprint.nih.gov/discover/3dpx-008091 H2O ice]\nFile:Graphite_sheet.jpg|[https://3dprint.nih.gov/discover/3dpx-008098 Graphite sheet]\nFile:zeolite_LTA.jpg|[https://3dprint.nih.gov/discover/3dpx-008099 zeolite LTA]\nFile:Spinel image.JPG|[https://3dprint.nih.gov/discover/3dpx-008114 Spinel crystal structure v2]\nFile:Silicon Carbide Alpha unit cell.jpg|[https://3dprint.nih.gov/discover/3dpx-008102 Silicon Carbide 2H unit cell]\nFile:Faujasite.jpg|[https://3dprint.nih.gov/discover/3DPX-008105 Faujasite unit cell]\nFile:Perovskite_vongag.png|[https://3dprint.nih.gov/discover/3dpx-008106 Perovskite]\nFile:Wurtzite printed.jpg|[https://3dprint.nih.gov/discover/3dpx-008112 Wurtzite]\nFile:Alpha Quartz.jpg|[https://3dprint.nih.gov/discover/3dpx-008115 Alpha Quartz]\nFile:Pyrite.jpg|[https://3dprint.nih.gov/discover/3dpx-008117 Pyrite crystal structure]\nFile:Diamond.jpg|[https://3dprint.nih.gov/discover/3dpx-008116 Diamond]\nFile:Sodium Chloride.jpg|[https://3dprint.nih.gov/discover/3dpx-008100 Sodium Chloride]\nFile:Rutile crystal.jpg|[https://3dprint.nih.gov/discover/3dpx-008122 Rutile crystal]\nFile:sphalerite.jpg|[https://3dprint.nih.gov/discover/3dpx-008123 Sphalerite unit cell]\nFile:Tetrahedral_kit.jpg|[https://3dprint.nih.gov/discover/3dpx-008126 Model building kit for tetrahedrally bonded diatomic crystals]\nFile:Fluorite.jpg|[https://3dprint.nih.gov/discover/3dpx-008132 Fluorite]\nFile:SiC_model.JPG|[https://3dprint.nih.gov/discover/3dpx-008134 SiC]\n</gallery>\n\n== Guides ==\n\n[[ModellingMolecules|Tools for modelling molecules for 3D Printing]]\n\n== List of Crystal Structures to Target ==\n\n* Aluminum Gallium Arsenide\n* Beryl\n* Calcite\n* Cesium Chloride\n* Diamond\n* Flurite\n* Graphite Sheet\n* Graphite\n* Ice\n* Lithium Niobate\n* Methane Hydrate Clathrate\n* Multiple - Crystal Model Kits\n* Nickle Arsenide\n* Sodium Chloride\n* Sphalerite\n* Spinel\n* Inverse Spinel\n* Quartz\n* Rutile\n* Pervskite\n* Lead Sulfide\n* Faujasite\n* Zeolite LTA\n* Zeolite LTL\n* Wurtzite\n* Silicone Carbide Alpha\n* Silicone Carbide Beta\n* Skutterudite\n* Corundum\n* Pyrite\n* Seven Basic Unit Cell Model Kit\n* Fe-Ferrum\n\n{{Page data\n| license = CC-BY-SA-3.0\n| keywords = 3D printing, crystal models\n}}\n\n[[Category:3D printing]]"}