× Molding and Casting Group Project Choosing my wand FabISP Milling the board

Mohit Ahuja's Fabacademy 2021

Molding and Casting

Difference between mold and cast:

Molding is defined as the process of manufacturing by shaping liquid or pliable raw material using a rigid frame called a mold or matrix. A mold is the hollowed-out block that is filled with a liquid or pliable material such as plastic, glass, metal or ceramic raw material.

Casting is a manufacturing process in which a liquid material is poured into a mold, which contains a hollow cavity of the desired shape (mold), and then allowed to solidify. The solidified part is also known as a casting.

(source: Wikipedia)

Group Project

This week's group project was particularly fun for me as I took some weird materials to test with.

Group Project

Research for the week

For this week, I took to youtube to look for some inspiration, and I found this video by youtuber Alexander Chappel particularly interesting.

In the video he took a multipart, 3D Printed positive mold that he then used to make a vacuum-formed negative mold that he then used to cast the model in white chocolate. We did not have access to a vacuum forming machine, so I did not proceed with this technique, but i thought it was worth mentioning as it is an inspiring idea. I might try it with a simple 3d printed mold instead of making a vacuum formed mold.

Designing the 3D File

To design the 3D file for this week, I wanted to make something that pushes the boundary of this process. So I took a very curvy, organic shaped character of a minion for my object since it has a fairly complex geometry.

I downloaded some pictures off of google as references for my model as shown below.

I then used Rhino to create a 3D model of the minion. The video attached below is a sped up version of my entire process: