02/23/2021 at 10:41 •
Here are some details about how the Jellybean3D is designed:
- The intention was to use 3D printed components and parts as much as possible, so I decided to make an unibody vehicle in order to avoid the use of a metallic chassis to support the body.
- Although a vehicle like this could be made by many other different approaches, it is designed to be 3D printed.
- Given the strength limitations of the materials available for hobby printers I have been very cautious on the structural design. So I created 4 different levels of structures: eggy shape, internal ribs (like airplanes fuselages), reticular structural web created by the bondings, and internal mesoscale structure created by the infill in every part.
- The big parts, body and door were designed as whole parts and later strategically cut in order to:
- Get the most strength in the directions that are more needed and make them coincident with the XY printing plane.
- Avoiding or enforcing the cuts in determinate areas in order to strengthen or not weaken them.
- Taking in account the appropriate cut orientations and cut locations in order to avoid the use of supports when printing.
- Some parts like the knuckles and others, have been topology optimised.
- For the non printed parts and components I tried to use very easy to find materials or components.
- In order to make strong bondings between the parts I developed a chemical welding system, more info here: https://youtu.be/5LqmyYqS6-k
02/16/2021 at 20:43 •
First parts just come out of the printer (door parts+), all looks good so far.
Next step post-processing and chemical welding.
02/16/2021 at 20:37 •
A list and info of principal components:
02/16/2021 at 20:03 •
1/10 scale model of the Jellybean3D.
And assembly guide for this scale model is here: https://youtu.be/9_9_ydc-NO4
3D CAD document of 1/10 scale version: https://cad.onshape.com/documents/e88854e0f694e95508aed56c/w/c09b93324fe9abec278f257b/e/2b249be11dccc2a3ce46b4fe
02/16/2021 at 19:27 •
First printed parts tests and first final parts:
01/28/2021 at 22:03 •
Introduction to the project: