Y'all have been asking for a tutorial for this engine for a while now, so here it is!
The Watt steam engine was invented by Scottish engineer James Watt in 1769 and is considered the first truly efficient steam engine of its time.
The designs used in this tutorial are mine but are based on the original design by James Watt.
Do not go about saying that this work is of your own design, as this design is copyrighted.
Sources:
Music - https://youtu.be/7hpfifR6JaM
Design - https://en.wikipedia.org/wiki/Watt_steam_engine