The second tutorial is for a riveting wheel. Do not worry I am still making models but I work on a new battleship and it is quite time consuming, so in free time I made these videos.
The blueprint with dimensions -https://1drv.ms/u/s!Ao19oQfAAAEZrHXMQdlRJiw6cFtm?e=3rNEIE

tomi
2020-03-04 16:09:14 +0000 UTC