Giant Molecular Model Kit

Oversized kit for demonstrating molecular structures.

https://youtu.be/iVCQ7WUnU90

Options

Atoms

• 1-Bond
• 2-Bond
• 2-Bond Alternate (120 degree offset ports)
• 3-Bond
• 4-Bond
• Hydrogen - A smaller version of the 1-bond atom.

Bonds

Bonds come in multiple sizes and two style. Default stems allow atoms to rotate freely. Locked stems prevent atoms from rotating.

• Long Stem
• Medium Stem
• Short Stem
• Mini Stem
• Flex Stem Long
• Flex Stem Short

Caps

Caps are used to secure bonds to an atom. Bonds are free to spin after assembly.

• Default - Simplest option
• Split - Tighter grip on bonds, but comes in 2 parts. This is the recommended cap when using flex stems.
• Alt - Use with you own custom bond materials: bungee, rope, etc. 

Printing

• All parts can be printed in PLA or PETG, but avoid brittle PLA blends.
• Flex stems are best if printed in PETG or a rigid TPU (95A/98A). If printed in PLA, the flex stems will eventually deform.
• All parts can be printed without supports. However, some sections of the interior threads have significant overhangs that require well-tuned cooling.
• Test print a 4-bond atom, a  default cap, and a short stem to check for proper fitting. If the fitting is too loose, you can get tighter results by adding a very slight fuzzy skin to the relevant surfaces.

Assembly

1. Slide stem into cap.
2. Screw cap into an atom port.
3. Repeat to assemble a full molecule.

Can I sell copies of this?

Yes! This project was shared under the Creative Commons - Public Domain license.

This license grants you permission to download, distribute, alter, print, and sell copies of this design.

This license applies only to the model files (STL, 3MF, STEP, F3D) included in this project. It does not apply to photos, videos, my logo, or other supplemental graphics attached to or displayed with this project.

Attribution Text

This license does not require attribution. But if you choose attribute my work, feel free to use the following text.

"Giant Molecular Model Kit" (https://3dprinty.xyz/project/147) is designed by 3D Printy (https://3dprinty.xyz) and shared under a Creative Commons Public Domain (CC 0 1.0) license (https://creativecommons.org/publicdomain/zero/1.0/).