Today, more and more makers and designers use 3D printing to develop and create. There have been a lot of print cases that we can't imagine or question very much. Nowadays, we are gradually entering the real life, 3D printing. This technology realizes the transformation of all ideas into virtual reality. 3D printing is a well-deserved connection between virtual and reality. bridge!
Geoffrey Schulz is near retirement age, but he is not worried that his retirement will become boring. Because he is still a 3D printing enthusiast in private. Now he is eager to have a lot of time to make some unique and creative projects using 3D printers after his formal retirement. In addition, Schulz is still an avid train locomotive enthusiast, so it is no surprise that these two hobbies will inevitably lead to intersection.
Recently, Schulz suddenly wanted to print a steam engine in 3D, but could not find a design that he liked, so he had to design it himself.
"I originally wanted to use this to explain to my son how the steam engine works," Schulz said. “I found a single-cylinder horizontal steam engine design in the online 3D model library, but it has some problems. So I made some changes and I iterated it 3 times before it worked.â€
In his first iteration, it took a total of several weeks to evaluate and print his engine, but by the last iteration, a two-cylinder engine, he completed the design and 3D printing in just four days. Especially the design process only took him about 8 hours.
Schulz's final work is based on a steam engine that can be turned up with a pressure of only about 5 psi. Schulz even designed a Stephenson valve for it to run the engine in reverse. All of its parts are printed in ABS plastic 3D. It can be seen from the video below that it works very well.
“The most difficult task is to match the piston and the valve precisely so that they move smoothly and generate air pressure through a reasonable seal,†Schulz said. “I designed the FreeCad software, I found this. It's a very functional open source software that is very similar in functionality to SolidWorks, but without the latter's very outrageous price tag."
So what does Schulz want to do next? He now plans to 3D print a complete locomotive with the 3D printed engine (or very similar) to move the locomotive.
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