Oh,I see it's one of those 'We'll just machine some bits of metal and decide what it's gonna be later on' ......OZ.
That's what I call planning ahead.
All the planning is ahead of me!
Hey, 1.5 inch bore ain't exactly a mill engine. Get crackin' !
Uh, happened to discover a 3/8" mark on my cylinder, so I guess it was a 3/8" pipe union, not a 1/2" as I originally said. Now it's 3/4" bore, though.
So today I dug out a (I think) 1" galvanized pipe cap with a hole in it from an earlier experiment with pulse jets. The hole was off center, but I planned to drill it out big enough to get a boring bar in it, and then true it up to center. Unfortunately that didn't go well. I chewed up the end of my 5/8" drill pretty bad before realizing there ws a hard spot in the cast iron.