Researchers at the Hasso Plattner Institute have worked out a way to make 3-D objects using only a 2-D laser cutter. They call it LaserOrigami. When you own a laser cutter, careful calibration is key.

Names and labels are difficult. Take this “3D Printed” water-cooling loop by [Visual Thinker] on YouTube. It undeniably uses 3D printing — but it also uses silicone casting and laser-cut acrylic, too.