This week’s show is a follow up of a recent episode we did about 3D printing. A lot of the listeners were interested in learning more about the overall tools and techniques of 3D printing. Andy Roberts, Vice President, inventor, and lead developer of Live Parts at Desktop Metal, joins us to discuss 3D printing and how they seek to innovate manufacturing processes.

Background

Andy Roberts was in the software industry for many years before getting involved with 3D printing. Eventually, he wanted to be involved in something more tangible, like manufacturing. When Desktop Metal started, he saw an opportunity to innovate manufacturing by mixing software with hardware through 3D printing technology.

I have a little background in subtractive manufacturing, or building by removing material. My father worked at an old milling machine company. I find additive manufacturing, or construction by adding material, very interesting.

The technology allows parts to be made in ways that they weren’t able to be made before. The creation of finished or near-finished products makes the technology quite sophisticated. Desktop Metal is building printers for the creation of products, as well as the software for people to use them properly. Good software is essential. If a user is not from a manufacturing background, the software will still allow them to create quality parts.

Live Parts^TM

Andy was interested in innovating manufacturing by creating new design tools for engineers. One day, he was looking out a window and watching trees blow in the wind. Thinking about nature, he asked how no one designs a tree. One plants a seed, then it grows and adapts on its own. Andy started studying cells and how individual cells grow and take the form of different shapes. He created a prototype design tool based on this process.

While it seemed like a cool idea twelve years ago, the technology was not there, so Andy put it on the shelf and pursued other ventures. Desktop Metal started four years later. He reached out to them to help build this software through 3D printing. The process begins with an assembly of existing parts. You then designate the regions that have to connect to different parts and send the information to the system. You need to specify the material which defines the strength of the parts. The system knows to get rid of excess material for less weight or to add material for more strength.

Innovating Manufacturing Processes

Andy walked us through a video showing the process of a skateboard being created by Live Parts^TM. The parts were shown growing to fill in the regions connecting the