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I was following this thread 3d Printed Double Acting Engine There were some proposals about a little/cheap air power supply capable to run the engines model and I remembered that I use many years ago a 16 grams CO2 cartridge to operate a single action pneumatic cylinder to actuate as a press...

This is my version of a Thermoacoustic cycle engine. My original idea was to make a Stirling engine but ended up in this, more simple one. This is my first and only attempt to the hobby until today. I made the cooler in aluminium and the cylinder in brass with a graphite piston. Also use 3mm...