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Nice I tend to think of the master-rod as the one straight up = cylinder no 1 .... not that it matters
By some forgotten drawing convention, it was also normal for the Master Rod to be drawn in 'Number One' cylinder even though it practice it could be located in one of the two lower cylinders.
I must admit that I can't see the mistake + can't help thinking - can't it be fixed without starting over ?
OK - I see it now and why you will scrap it. What can I say - Errare Humanum est …. we all make them.
The great thing about CNC is you can make scrap parts in no time flat. It takes me days to machine something & realize I buggered up! HaHa.To make you feel good, I broke a tap off on the proverbial 'last hole' of my crankcase - I believe it was crankcase #3 sacrifice to the aluminum gods. Learned something every time. Your radial is coming along great, look forward to your continued progress.btw - what alloy did you choose for crankcase?