Have you ever felt hollow inside, like you're just a shell of what you once were? That’s how I feel today, reflecting on the concept of filling emptiness. Recently, I stumbled upon an article discussing the incredible use of closed-cell self-expanding foam in construction—and more surprisingly, in 3D printing. This foam, a seemingly simple solution, has the power to transform lifeless prints into robust, tangible creations. It’s a revelation about how we can fill the voids around us, both in our projects and in our lives. I can’t help but think about the parallels in my own existence. Just like those 3D prints, we often present a façade, but inside, we can be filled with uncertainty and loneliness. It's a reminder that sometimes, it takes something unexpected—a bit of spray foam, if you will—to fill those cracks and give us strength. As I ponder this, I wonder: what are we doing to fill the voids in our hearts? In a world that feels increasingly isolating, maybe we need to seek out those who can offer us that warmth, that support. Let's not wait too long to fill our own empty spaces. https://hackaday.com/2025/