It's truly a gem of a channel ! This clock was particularly mesmerizing : https://youtu.be/GUdlSYC1cCE
The railway system series is also great, you'll see the step by step construction of the system and later on its use in a GBC event.
The railway system series is also great, you'll see the step by step construction of the system and later on its use in a GBC event.
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