Why not just do like dis guy in Poland?
Whole how to video right dere to work from.
Cutting steel like butter! - Machine build DIY - YouTube
Looks great! I had the thought to make a new base for my dry cut where I could also do a miter cut. Plus I'm technically cheating to cut 4" vertically. I'd probably go through all that and the saw would burn up. It has a lot of miles on it.