Ok, I was thinking that the Core stays at it's size and if it has the final size, the aluminium could not shrink smaller than the core
If the cores don't have enough collapsibility to allow the casting to shrink, the casting will tear itself apart trying to shrink anyway. Or so I've read... Jeff
Completed the machining a couple weeks ago. Had to take a little warm weather vacation but am back home now and will be finishing up the complete system and have a follow-on completion video in the near future. Best, Kelly
Holy crap... that's some nice work It's real fun to watch your work Hope that I get my project finished with the same quality as you.
I finished this project. Here's the result and video with the build and completion details. Video: Best, Kelly