Invention Stories

Blue Fur, Aluminum, 3D-Printed Parts, and Some Legos

Prototyping an easy method for creating Muppet-like characters in Spark!Lab

Close-up detail of medium-blue polyester fur

Blue polyester fur. © 2017 Smithsonian Institution; photo by Tim Pula

How do you allow hundreds of museum visitors to create their own Muppet-like creatures? Better yet, how do you do that without glue—and in such a way that they can be taken apart and remade by someone else? That is something we are currently experimenting with in Spark!Lab.

One of our new activities for our theme "Play" is "Create a Lifelike Character." While approaching how to make the activity workable, we narrowed in on a few key components that should make the activity possible. I have a feeling that this activity is one that will need quite a bit of tweaking, but it is certainly off to a good start.

The key components in our Lifelike Character activity are small extruded aluminum beams, blue fur, Legos, and some 3D-printed parts.

An array of parts from which a creature can be made; includes blue polyester fur, hinged aluminum rods, miscellaneous Lego bits and 3D-printed parts, and small balls made into eyes.

Aluminum, blue fur, Legos, and 3D-printed parts. © 2017 Smithsonian Institution; photo by Tim Pula

These pieces all interface with each other through some custom-designed components. The first of these was a Lego connection point that fit into the grooves of the extruded aluminum. This allows for connection points anywhere along the length of the aluminum parts. The aluminum, along with the Legos, is the support structure for the creatures that will be created.

Small 3D-printed plastic bricks with holes for connecting Legos to fur.

3D-printed prototype component that allows Legos to be attached to either side of the blue fur. © 2017 Smithsonian Institution; photo by Tim Pula

A fish-like creature made in SparkLab with a blue fur body, a plastic dorsal fin, an aluminum rod tail, a Lego and 3D-printed block mouth, and handmade eyes.

Furry fish created during activity prototyping. © 2017 Smithsonian Institution; photo by Tim Pula

We have also worked out a Lego-to-fur interface that should allow for connecting pieces both to the underside and outside of the fur. I am not certain how well this part will work but I am hopeful. While researching this project I found that the most common ways to connect fur to a creature are glue, sewing, and Velcro. Outside of the Velcro, the other two are not easily disassembled. The Velcro may be what we add at some point but I am hoping to keep the Lego interface.

With our interface, we should see things that look like Muppet/robot hybrids. This is intentional for two reasons. First, it should just look way cool. Second, it is meant to open a new window of what could be used together, hopefully inspiring our visitors to look at things through a new set of eyes.

Like all of our activities, this one will be a prototype when it hits the floor. I am anxious to see what types of creative outcomes we get. As with any activity, my hope is that this one will involve lots of photo ops for families. That is one of the measures of success I like so much about working in a creative space.