06/09/2026
If you’ve ever had an impression of your teeth done, then you’ve been molded with the same material used to make live casts of Marines displayed throughout the National Museum of the Marine Corps.
Throughout the museum, you’ll find dozens of cast figures… 168 of them, to be exact. Every single figure—Marines, civilians, kids, and Afghan citizens—was molded off of a real human using alginate, a safe, plant-based powder derived from brown seaweed that mixes with water to form a rubbery, flexible substance that is skin-safe, non-toxic, and has the ability to capture detail incredibly.
A long process—sometimes up to four hours for a single figure—is very strategically molded, often starting with the legs first, followed by the torso, then the arms, and usually finishing with the head.
But that’s not even where it all starts. How is an individual selected to be cast?
When we're posing a marine, we try to represent that marine accurately. We select active-duty Marines from Marine Corps Base Quantico that hold the same MOS (military operational specialty) as the figure we are portraying. This adds to the authenticity of the figure, as the Marine can more naturally depict the action we need rather than have a novice person “just pretend."
The spatial planning comes next. Our exhibit specialist, Alice Webb, gave us some insight into the spatial planning process:
“Once we determine the scene, we have the Marines and the other “actors” come in, and usually we'll do role-playing as far as what the action of the scene is. For example, there's the Shura scene {in the Iraq and Afghanistan gallery}. There were so many figures in that scene. So we had to physically determine, ‘Is everyone going to fit in this space?’ And then culturally, we had to work with the Afghan representatives and coordinate: ‘Who sits to your right? Who sits to your left? Where does your son sit? Who's pouring the tea?’ Because, you know, there's significance to all of those positions, as well as the corresponding positions of the Marines.”
Lots of photos are taken to document the scene, what the individual will be wearing, their gear, their facial expressions, the individual themselves, and to capture what the emotion of the scene is.
Hundreds of decisions are made before the casting process even begins. And somehow, that’s still only half the story.
📸 Slide 1: Cast figure in our World War II gallery
📸 Slide 2: Casting process
📸 Slide 3: Shura group photoshoot
📸 Slide 4: Shura installation