Started Feb2022, 1st startup 9/16/23. 1st good runs 9/18/23.
All manual machining although I do have DROs on my bench mill.
Wish to thank Steve Hucks for an assist on crank and Terry Mayhugh for some info.
Ron Osborn,aka ozzie46
I have a cheap import and when I tighten work in the jaws the rear jaw moves .007 +.
Have solid rear jaw tilting vise I use now.
The cheap import rear jaw is bolted down over a 3/8 or 1/2 in . ( can't remember now ) square key.
Ron
It is but it is metal filled not just clear epoxy and is tolerant of moderate heat. Navy vet told me they repaired a crack on their ship engines exhaust manifold and it last long after they returned to port.
Ron
I did mine with manual machines. Just have to be very deliberate and think about what needs to be done continually. I have DROs on my mill/ drill, so that helped immensely.
Ron
For those of us that can't weld or have the equipment, that is an issue. Second unless the collet has absolutely zero run out there will need to be extensive lapping to get a seal against the valve seat.
Ron