Our countdown includes NASA and Blue Origin replicas as well as Estes models with cameras and STEM sets for kids.

D-printed rocket engine model on ₹1 coin showcased at EVINCE 2025 conference, highlighting precision of BMF printers.

The company’s model rockets range in size from six inches to two feet tall ... Estes manufactures the cardboard cylinder engines that power their model rockets in Penrose.

So, while you might never get the chance to build a rocket engine on this scale, just looking inside the process is fascinating. Who knows? It might help you with your next model rocket project.

Standing just 7 inches tall (18 centimeters), the one-stage rocket lifted off, not by the thrust of a black powder engine, but rather on the space shuttle Atlantis. [Student Model Rocket Launches ...