I was excited to learn how to use 3D printers. I have future plans that could include 3D printing structure, so I was glad to learn about the different types of machines and materials available.

After browsing Thingiverse for a while, I came across this cool-looking triple gear. Little did I know that Tiffani had selected the same one independently… (What are the odds of that?)

I like it because it’s clearly an example of an object that could only be constructed with 3D printing. It consists of three interlocking rings with edges shaped like gear teeth. The rings each rotate through the other rings’ grooves. They actually turn.

I learned that there is a difference in the amount of time it takes different machines to perform the same print. I used the Objet and my print took four hours, while Tiffani used the Fortus and hers took over thirteen. I had also expected my print to cost more – Jack’s was around $40 and it looked like he used less material than I would. However, mine only cost $12.15.

After the piece came out of the 3D printer, I removed the support material with the power washer. I was scared that I would accidentally damage the gear by spraying it too hard, but that didn’t happen. The plastic material is tougher than it looks.

I wish the 3D printers in the wetlab were free to use, but I understand they’re not. I just hope the four small ones near the wetlab door are up and running again soon.

I’m looking forward to molding tomorrow and learning about CNC next week.