Re:Hand Scraping a Truly Flat Plane (1908) [pdf]
by jhallenworld on Friday April 17, 2020 @10:08AM
(#22899082)
Interesting! My statement was based on what I read in the Museum of Retro Tech:
http://www.douglas-self.com/MUSEUM/museum.htm
Many designs have been tried over the years, but suffer from oil leaks, low compression or high manufacturing costs.
See:
https://en.wikipedia.org/wiki/Piston
And a this one I found via DuckDuckGo
https://blog.wiseco.com/pistons-arent-round-profile-and-oval...